I think you paid too much. I cannot believe I got a bargain.
Mine had a broken clip on the heat-sink and fan and no plastic stand offs and like yours it was tested but "sold as seen". Not serious problems but it might have put some people off.
I bought mine because I had read they were easy to convert to Apollo 4060. Not done it yet.
They are not the most sort after accelerator, but they can take upto 128Mbytes of FastRAM (although they are very picky on what SIMMS they take) and they have an 040 @ 40MHz and are roughly 3x faster than an A3640 @ 25MHz.
The SCSI sucks though.