I think the online v. LDS is about convenience and price.
I agree, I shop online for the convenience. They are open 24/7 and I don't have to high tail it after work to beat a 7pm closing time. They don't nag me if I visit and leave without buying. I can shop at 3am on a Tuesday morning in my birthday suit. And best of all, when I want something some guy or gal brings it to my front door.
Scubapro for the most part does not allow its products to be sold online. For those of you who say you've bought Scubapro online you can find sites that do but it invalidates the warranty. If you want Scubapro you need to go brick and mortar LDS.
Correction, buying Scubapro from an unauthorized dealer invalidates the
manufacturer warranty. We know who you're talking about and they match that warranty with their own. But like I said before, I buy tons of gear and only a few times had a warranty issue and those were for lights. Never had a reg or BC need a warranty although DiveRite shipped me a replacement spring that was a recall item. For a wing i bought online.
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But you still need a LDS for certain services. Unless you want to pack your regulators and BC in a box and ship to the manufacturer, how else are you going to get them serviced? And how do you get your tanks filled? Where are you going to go to find a liscenced instructor for specialty certification? I live in California, I certainly can't get online certification from Scubatoys.com which is based in Texas.
Actually, I send all my regs to Scubatoys for annual service, just $49 for 1st and 2 2nd stages. Blows away the LDS prices and I have always had them back within 7 days with the printed specs. That's cheaper and faster than local plus there's that convenience thing - I had them to my mail carrier and he brings them back to my door a week later. No fighting traffic and the shipping is less than the gasoline.
Air fills are a valuable service although all the scuba parks around here have compressors.
As for instruction, let me let you in on a secret. Shops don't certify divers, instructors do. Just find an independent scuba instructor. Just because a LDS closes it's doors doesn't mean all the instructors in the area stop living.
For travel, I use Orbitz or Expedia or book direct.
For dive buddies, I have my local diving club. See signature line.
For advice, I use my dive buddies or forums like Scubaboard.