I was looking advice to buy this flash unit for my camera, the Nikon SB 600, from this board. In spite of the comments made here I went and bought one off eBay. I wanted it nlt Wed July 23 so I asked the seller what the add on costs would be. She emailed me and told me it would go from $6.13 to $15 for 2nd day air or something. This was cool. It arrived before noon. I checked it out and it works perfectly. Sometimes when I buy something off eBay it is like waiting for some POS that I just paid good money for and have no idea if it is what I really want, just as long as I got a good deal is all that seems to matter. This one worked out...at least so far it has.