Look up the StarBoard for the A1000. Thats the A500 version. I belive the stock starboard was 2megs of fastram when fully populated. The "upper deck" expansion board for it gave you the possibility of ANOTHER 2 megs (maybe even up to 8megs, I dont remember)..
That one has the "upper deck" expasnion and the SCSI expansion boards in place (hence the DB-25 on the back.)...
Also, those ASUS LCD shutter glasses look like they use the exact same plug that my X-SPECS glasses used. Those might be worth getting at that price.. I sold the X-SPECS for over $300.00 on ebay about 5 years ago..
I already scarfed up the GVP Impact Series II A500 HD+($40.00) and GVP DSS8 Sampler ($10.00) he had, so thats my "allowance" for the week..
But in my oppinion, ANY A500 SIDECAR is worth $25.00. I would not hesitate to buy that Microbotics Device, or any of the other "buy it now" stuff he's selling.. If nothing else, you could resell it on ebay for twice that.