I’m selling a roboRIO 2.0 for $350: NI National Instruments roboRIO 2.0 | eBay
It’s in perfect condition; I bought it a couple years ago with the intention of building a testbed, but I ended up getting busy with other things. It’s just been collecting dust since.
EDIT: Also a PDH that I forgot I had, for $150: REV PDH Power Distribution Hub | eBay