well like i said, i think you need to rethink your process.
a search of completed items speaks volumes and is all you need to do. it tells you the actual going rate (vs the sellers reserve which only tells you what the seller wants for it), if the price is rising or falling, how often such items come up, and it takes about 2 minutes.
bottom line, if you dont know what the actual real going rate for an item is, you cannot make an informed decision about what to bid. the sellers reserve is meaningless except to the seller.
randy