Honestly need to admit that I don't think 50% off on all items be a good idea. There alot lv10 donors with a shitload of lpp who could easily buy all items then.
Idk, i has rather said take maybe 50% on the "basic" items (buff hats, angra/ahura, megs, etc) and a bit lower discount on that seasonal stuff as it is now (xmas, old bf stuff etc).
And ofc make sure the items get cheaper and not magically more expensive then before.