The Flash that i sold i bit over a year ago is an example of a game i bought on a whim, that i only ever played once back in the day. I DID like the game but my collecting has evolved into collecting games that i played A LOT back in the day and enjoyed so its all based on nostalgia for me.
Last June i picked up another Flash for a 'fixer upper' for $230, bargain of the century!! It was in pretty decent shape too, but as the goal soon as i found the game was to get it running, tidy it up and sell it so it wasn't kept long. I have two more project Flash's in storage, so one of those may end up in the collection