What cost 95 - 99 prayer on an Gilder Altar?

http://www.tip.it/runescape/?page=prayer_calc.htm

 

1.) Input the exp for 95 prayer/Put 99 as the target level

2.) Set Category as "Guilded Altar/Burners Lit"

3.) Click Tip Me

4.) Pick an item you want to use (presumable either infernal ashes/dbones/frost bones)

5.) Multiply quantity by price

 

Viola

Voila.

Thanks mate!