seller is JBT marine (JBT), or contact RIVA on here. Jockeys look like they might be off their ballistic range of ribs. You could phone and offer to buy them straight up from them which would avoid them having to pay ebay fees?
As Tim says they're JBT/Ballistic ones. I think they're having a clear out up there hence all the ones that are appearing on ebay. The fit out on their boats has a good reputation so these should be of the same high quality.