I don’t have a problem buying diving equipment on line and saving money, been doing so for a very long time and will be doing it in the future, I do take my tanks to local dive shops for service/air fills small stuff and that is all!. For repairs/service on regulators and BC I send it out to the manufacture and all others I just replace when they get too small or need new. The key to buying on line is know what you’re buying and buy the best equipment you can afford. You get what you pay for!