To earn the title of Soul Bearer player, you need to complete Bear your Soul miniquest which is very easy. In the event that you own this thing, you can send your ensouled heads to the bank for the cost of one charge. For refilling charges, you'll need sacrifice one soul and one blood rune per charge to the Bearer.
Prayer can be a costly talent to learn and due to that it is vital to check bone/head prices before buying large quantities. Making bones on your own is not a good idea and is best avoided. It is generally better to earn money by using an efficient method and buy bones from other players. There are several types of bones employed for Prayer training like Dagannoth Bones, Superior Dragon Bones, Ourg Bones and other.
In both souls and bones - the better item that you choose to use, the more expensive it gets and also more experience it grants. Some of the items will offer better experience for the gold invested than others, and others will grant huge amounts of experience in a speedy pace, but will also cost a lot. It is important to be aware of how much money you're able to pay and what level of prayer you'd like.
There are many calculators available on the internet that allow you to find out which bones will perform best for your needs. Calculate the quantity of bones needed. If you're short on time or simply don't want to find it out - usually Dragon bones , as well as Wyvern bones provide most efficient Gold to Expensive ratios, therefore they're worth the investment. When it comes to the ensouled head Kalphite heads are currently very an excellent choice as it would take around 50mil to take you from the level of 1 to 99.
If you have 93 Magic you could consider Dragon heads because the rates of experience are excellent and the cost is around 90mil for 99 (which for prayer is actually quite cheap). Other alternatives like the Ansouled Bloodveld Head aren't as worth it.