I went through and ctrl+F the last three years worth of Achievement Suggestions so hopefully this wasn't brought up recently.

We've already got a couple Pawn Shop achievements, one of which is simply 'buy an item.'

Well, to go along with 'empty pawn' as well as pull a small amount of sP out of the system, why not add tiers to buying from the pawn shop? There's very little incentive for abuse- you're gonna get back less than you buy it for if you think you can pawn/rebuy the same item repeatedly. A good number of items are in there for more than user shops are selling them for.

I kinda like it, would give me a reason to pay more attention to the pawn shop.