I just ordered one... less than $11 including shipping. I plan on placing a piece of rubber (like the round piece you buy at Wal-Mart to help open jar lids) on the deck of the press and voila... instant bottle capper for very small price. Supposedly even caps twist off bottles...
I can't believe only 4 people have bought this item... stainless steel.
Yes, it does cap twist-offs, very nicely. I don't know how a "regular" bench capper is supposed to feel when it operates, but this is very easy to use. Put the cap on top of the bottle, line it up, and press down. You'll feel the resistance ease up as the cap is crimped and the capper slides down the side of the cap. At that point you're done; no need to press any harder. The bottle will be stuck in the capper but just rock it gently side-to-side and it comes right out!
I did a couple of twist-offs and they sealed perfectly and twisted off just fine.