In 1993, I didn't own a computer. Even then, there were 3,perhaps 4 audio equipment dealers in my area: "Best Buy", "Circuit City"(now defunct) & the "Sound Advice" chain(now defunct, and mercifully so, since they were unethical gougers who frequently exceeded manufacturers suggested price). There was also a home theater dealer/installer(Cimax, now defunct), which was a locked-door showroom that you had to have "connections" to enter.....something that may have contributed to their demise. I didn't think that my selection of brands & models should be limited to those brands & models that have local availability. Ideally, I should be able to select from all of the major brands & models within my price range.
Even if I were to travel down to the Southern part of my county, while there would be home theater installers, they would likely be sales offices with no showroom. And English(my only language) would be a second language for the salespeople there.
I make no secret that I do seek out the best possible price, since my experiences in 44 years of buying consumer electronics showed conclusively that I had more success with repairs done by "Factory Authorized Service Centers" than repairs done by dealers, therefore high-priced "salon" dealers' "advantage" of having a repair shop on premises was never an advantage to me. On at least a few occasions, a salon dealer only pretended that they had a repair shop, then actually took the piece of equipment to a "Factory Authorized" repair shop.
I did get a great price on my JBL's: Four S312II's, an S-Center & an S120PII subwoofer for the grand total of $1719 with free shipping & no sales tax. Audiophile product they're not, though they're certainly good, and they were an incredible bargain, and the only problem I ever had was that the subwoofer's amplifier failed after the warranty ended. After an expensive repair, I found a way to prolong the lifespan of the subwoofer's amplifier by using the standby mode(and never entirely turning the unit off), and I never had any problem ever again. And when the S120PII was being discontinued, I bought a spare one for an incredible $299. I've never had to use it.
But this thread was really about JBL, not where I would buy product. Inevitably, just like with the business of selling CD's & DVD's, the public has moved away from local stores towards buying from mail-order & internet dealers. Price & selection are the reasons. There's nothing inherently wrong about internet & mail-order dealers.