Just saw a computer space for sale!

just saw a computer space game for sale, looks like the cabinet is in great condition, pcb is apparently working, everything except monitor bezel seems to be there. here are my concerns. is 600-800 too much for one of these things? is the gameplay pretty solid or is it one of those that wears off after the initial shock of seeing one and playing one for a few minutes? i put a bid in for 600.00 just to see what happens, there has been multiple bids up to mine already and seems like its going fast. prob. wont win this or pull the trigger unless i hear from you guys first. (sale ends in 3 days) if your guy's response is to go for it, then ill increase incrementally up to 1000 as my highest offer. would be nice. also, it seems that the monitor is not original, and that it is just a used tv, and that somehow the previous owner had it rigged to play using a nintendo rf connector as means of or a way to connect to pcb to get correct display. i dont know if this is a good sign or not. i am going to post the link and hopefully you guys can fill me in and give me the heads up to save me from doing something stupid or push me to get a great game. if this seems easily fixiable and you guys are certain i can find a monitor bezel surrounding redone for this then let me know! i like collecting, and fixing, i dont like being stupid. thanks. - Philip
http://www.ebay.com/itm/Rare-Vintage...torefresh=true
*correction, my bid is for 587.00 so far. not 600