The OSRS Prayer training cost can range from about 59.7M GP at the Chaos Altar to roughly 116.8M GP at a gilded altar using dragon bones. Your choice affects more than the bone price. You also need to account for unnoting fees, teleport supplies, house costs, and possible deaths. Since dragon bone prices change often, a quick calculation can save you millions before you begin.
The Chaos Altar uses fewer bones on average because each offering has a 50% chance to save the bone, but it comes with player-killer risk and extra travel costs. A gilded altar is safer and more predictable. Using a hosted altar can also help you avoid the roughly 1.23M GP construction cost of building your own.
Key Takeaways
- For 1–99 Prayer with dragon bones, a gilded altar requires about 51,724 bones and costs roughly 116.8M GP at 2,259 GP per bone, before teleport and supply costs. Building a private altar adds about 1.23M GP, while a hosted house can avoid that expense.
- The Chaos Altar offers the lowest expected cost—about 59.7M GP including unnoting fees—because its 50% bone-save chance reduces average consumption to roughly 25,862 bones.
- Chaos Altar savings come with Wilderness risk: player killers, deaths, lost supplies, and replacement trips can make the actual cost higher and less predictable. Use a gilded altar when safety and consistency matter more than minimizing GP.
- Buried bones are extremely expensive despite their simplicity, while the Ectofuntus and Varlamore’s blessed bone shards provide safer or more bone-efficient alternatives at the cost of slower training or extra preparation. Recheck Grand Exchange prices and include all travel, fee, and supply costs before buying bones.
Dragon Bones Cost For 99 Prayer
Level 99 Prayer requires 13,034,431 Prayer XP. Dragon bones give 252 XP each on a fully lit gilded altar or at the Chaos Altar. You need 51,724 dragon bones to reach 99 if every bone is successfully offered. At an example price of 2,259 GP per dragon bone, that supply costs about 116,844,516 GP, or roughly 116.8M GP. Grand Exchange prices change constantly, so use this as an example rather than a fixed cost.
At a gilded altar, you will normally use all 51,724 bones, making this the safer but more expensive option. A private player-owned house may also require about 1.23M GP in construction materials. You can avoid that cost by using a hosted altar instead. You should also budget for house tabs, teleport runes, and other travel supplies when calculating your full OSRS Prayer training cost. With these extras included, your total will be slightly higher than the bone-only estimate.
The Chaos Altar can save about half of your bones because each offering has a chance to preserve them. You can expect to use around 25,862 dragon bones on average. At 2,259 GP each, those bones cost approximately 58,422,258 GP. Unnoting fees may add about 1.3M GP, bringing the basic estimate to roughly 59.7M GP before teleports, supplies, deaths, or losses to player killers. You still need to carry and offer about 51,724 bones over multiple trips, but the preservation effect reduces the number you must replace. This makes the Chaos Altar the budget-focused choice, while a gilded altar offers more predictable and generally safer training.
Gilded Altar Training Cost
Training from level 1 to 99 Prayer with dragon bones at a gilded altar with both burners lit requires roughly 51,724 bones. At a recent price of 2,259 GP per dragon bone, the bones alone cost about 116.8M GP. This method provides a steady experience rate and avoids the risk of losing bones to player killers. Prices change often, so check the current Grand Exchange value before setting your budget.
Building your own gilded altar adds approximately 1.23M GP in materials, including the altar and two burners. That brings the main cost to about 118M GP before travel and other supplies. You will also need house teleport runes or tablets, along with materials for keeping the burners lit. If you already meet the Construction requirements and have a suitable house, this one-time setup can be worthwhile for repeated Prayer training.
You can reduce the upfront cost by using a hosted house with a gilded altar. Hosted houses may charge a small fee or require you to bring your own teleports, so plan for hosting costs, bank trips, and inventory supplies alongside the bones. For a practical budget, set aside 116.8M GP for dragon bones, around 1.23M GP for a private altar if needed, and extra GP for teleport tablets, runes, and burner supplies. This route is predictable but expensive, making it useful when you value safety and convenience over the lowest possible Prayer training cost.
Chaos Altar Training Cost
The Chaos Altar can cut your OSRS Prayer training cost almost in half because each bone has a 50% chance of being saved when offered. For level 1 to 99 Prayer with dragon bones, you need about 25,862 purchased bones on average, assuming the saves balance out over many trips. At an estimated price of 2,259 GP per dragon bone, the bone cost is close to 58.4M GP. You should also budget roughly 1.3M GP for unnoting fees, bringing the expected cost to about 59.7M GP before teleports, supplies, or deaths.
The main trade-off is that the Chaos Altar is in the Wilderness, so player killers can interrupt your trips and make the real cost less predictable. A death may cost you a load of bones, valuable equipment, food, and teleport supplies. Repeated attacks can also force replacement trips and reduce your experience per hour. If you use the Chaos Altar, carry only what you can afford to lose and treat the 59.7M GP figure as a best-case budget. For a safer plan, paying more for a gilded altar or another house-based method may be worthwhile if avoiding risk matters more than saving GP.
Prayer Method Budget Comparison
Buried dragon bones are the simplest option, but they give only 72 Prayer XP per bone, so your OSRS Prayer training cost becomes very high from level 1 to 99. At a price of 2,259 GP per dragon bone, you would need roughly 181,000 bones, costing about 409M GP before altar, teleport, or fee costs. The Ectofuntus improves the experience to 288 XP per bone and costs about 102M GP in bones from level 1 to 99. However, you must collect bonemeal and buckets of slime, making this method safe but slower and less convenient than an altar. Choose these methods when avoiding player killers matters more than speed, especially if you want a predictable training route.
Gilded altars give 252 XP per dragon bone, requiring about 51,724 bones, or approximately 116.8M GP at the same price. You may also need around 1.23M GP to build a private altar, although a hosted house avoids that construction cost. Teleports and other supplies add to the total. The Chaos Altar offers the same XP per bone, but its 50% chance to save each bone reduces expected consumption to about 25,862 bones, or 58.4M GP, plus roughly 1.3M GP in unnoting fees before teleport costs and deaths. It has the lowest expected bone cost, but trips through the Wilderness carry a real risk of losing bones and supplies to player killers.
Varlamore’s blessed bone shard method can provide roughly 900 Prayer XP per dragon bone before Sunfire bonuses, making it useful when you value bone savings over simple banking. You avoid Wilderness risk, but converting bones, gathering the required materials, and offering shards at the Libation pool takes more effort than using a gilded altar. In practice, buried bones suit the simplest budget option, the Ectofuntus provides safe bonus XP at a slower pace, and a gilded altar offers fast and predictable training. Choose the Chaos Altar for the lowest expected bone bill, or Varlamore if you are willing to do extra preparation for better XP per bone.
Plan Your OSRS 1 to 99 Prayer Budget
For level 1 to 99 Prayer with dragon bones, budget about 116.8M GP for a gilded altar, based on roughly 51,724 bones at 2,259 GP each. This method provides a safer and more predictable training plan, although you may also need to cover house construction, hosted altar access, teleport runes, and other supplies. A private gilded altar can cost around 1.23M GP to build, but you can avoid that expense by using a suitable hosted house. Your final OSRS Prayer training cost will change as Grand Exchange prices move, so recalculate the bone requirement before buying everything.
The Chaos Altar can reduce the expected cost to approximately 59.7M GP, including about 25,862 consumed bones and around 1.3M GP in unnoting fees. However, this estimate does not include deaths, losses to player killers, or extra supplies, so the cheaper route carries more risk than a gilded altar. Choose the method that fits your available cash, risk tolerance, and training goals instead of focusing only on the lowest possible price. If you are considering shortcuts, protect your account by avoiding account-sharing and boosting services.