(Opened) Blind bags online for cheap?

[TyrannusRex 4]

I'm looking for an easy, preferably cheap way to get specific blind bag minis online. I've seen individual ones go on eBay for up to $100  (Sweet Celestia, Chrysalis, you're breaking the bank 0_0; .) I'd love to know if there's an easier way to find everypony's favorite characters for those, such as me, on a budget (a college budget at that...)