Pay-to-play Prayer training

Prayer is a wildly used skill throughout Old School RuneScape. Despite the fact that training it can be quite costly, it is very important to higher-levelled players.

Burying Bones
The most basic way to gain prayer experience is to bury bones in the ground by clicking them. Each bone gives a certain amount of Prayer XP when buried, the more difficult ones to obtain typically give the most XP per bone. It would be better to take high-tier bones like dragon bones to an open gilded altar in a player-owned house or the Ectofuntus, however.

Worshipping the Ectofuntus
See Ectofuntus for a detailed explanation.

A less common way to train prayer is to use the Ectofuntus north of Port Phasmatys. This method includes grinding up bones, gathering buckets of Ectoplasm, then using them on the Ectofuntus to gain four times the amount of xp as burying bones. This method is very slow, but is the best xp per bone.

Player Owned House
Arguably the fastest method to training prayer in the game is to use an altar made in a POH. Using bones on a Gilded altar with two burners lit can give a maximum of 350% of the xp gained by burying bones. Despite the fact that even the best altar with two burners lit does not give as much xp per bone as the ectofuntus, many more bones can be processed in less time, making the xp per hour much higher at a higher cost.