There are numerous calculators on the internet to RuneScape gold discover which bones would be most effective for you. Determine the amount of bone needed. If you don't have time or aren't able to look it up - generally Dragon bones or Wyvern bones are the most effective gold to exp ratio which is why they're an excellent value. When it comes to heads that are ensouled Kalphite heads are currently very ideal as they require about 50mil to bring you from level 1 to 99.
If you're blessed with 93 Magic you may consider using Dragon heads as experience rates are extremely good and it cost around 90mil for 99 (which can be fairly inexpensive). Other options such as the Bloodveld Heads that are ensouled Bloodveld Head aren't as worth it.
Before we get started with this OSRS prayer guide it is worth noting that praying is an extremely costly talent to acquire. To reach the highest levels of prayer requires an enormous amount of gold to be invested , however at the same time it's one of buy old school rs gold the most simple skills to master if you're wealthy. To reduce your expenses and move upwards, you want to follow the most effective strategies.