Just from browsing Ebay, many of them go for ~$30-35. So I'm looking to pay less than that.
Of course, it's dependent on the condition/accessories. But I'm not looking to spend a lot though.
I have a black one. Minor scratches. 7/10 18 shipped. Are you looking for Pokemon games only? I also found a teal one in a Costco parking lot, but it has bite marks...