Alching is a waste of time and cash. If you want 99 mage the fast way do plank make, less proffit loss and very HIGH xp 50gp proffit loss per cast wich gives 90 xp , while alching is 53xp per cast for 100gp proffit loss, but if you still want to alch you should alch maple longbows, or if you want it the cheap way do superheat steel bars, its 75k magic xp an hour and 26k smithing xp an hour, and from lvl 43 to 99 it only costs like 1mil-1.5mil gp.