I think 5 buck plus shipping isn't a bad price, if you like the music that is. If you don't like the music, $2 would still be too much. =)
That GEM. Reading about it, it looks like it could be potentially one of the best cleaners. If you check out "How Vinyl is Made" on YouTube, you'll see that somewhere in the mastering process, actual cleaning and prep looks similar to the GEM. Ive seen no vacuums in that process in any of the vids.
Still, there is this whole convenience factor, with vacuum types winning in that area and still reported as good performers. Could even use both, but the less convenient my approach to vinyl becomes, the more desirable a good CD player looks. =)