First off, I have used Ebay to buy and to sell a few things to me its no big deal I wanted to try something, found it on Ebay bought it and there you go.
The argument some dive shops make about used gear is that we expect them to service it even though they did not sell it to us, well I don’t know about you but the guy at the repair shop down the road did not sell me my car but he sure has no problem changing my oil, or rotating my tires, or fixing anything I need done.
The point is the internet is here to stay the local dive shops need to adapt a little to stay in business. Oh and that airfill thing well I hate to say it but there will always be someone there to move in on that too, if there were no shops in the area I can just see Wal Mart start doing it, you laugh now but I am sure the small car repair shops thought they were the only game in town until Wal Mart and others started doing service work too.
Instead of cursing everyone that comes in with a online purchase, service the equipment and make your money that way also.