I Bought mine in April this year and in that time he didn't have any for sale in his Ebay shop, so I send him a message and he responded and sold me one.
Found his private email: Joe McGloin; xkaes(at)aol.com.
Very, very simple design, but it works! If you are heavy user of 127 it's no brainer with price of $10 per roll of 127.