Pinks! Sets! Prices, Oh My!

So I'm an am-mature at the pricing or worth of items (both sets and non sets), so to be safe I just avoid purchasing all together. I was wondering if in this thread we could post, discuss and find out how much any given pink item or set items might be worth as a standard that we might go off of when purchasing in the game. If you post here please list the item (or set) and cost.

Thank you