A medium XP lamp can be bought from Gypsy Aris' Reward Shop for five silver pennies, which are rewarded after completing or replaying Dimension of Disaster. This is the type of lamp available if you've only completed up to the medium set of the New Varrock Tasks. The lamp can only be bought once per week, resetting at 00:00 UTC on Wednesday. It gives the same amount of experience as a regular medium XP lamp: