The link didn't work for me (e-bikedealers.com), but when I typed in www.e-bikedealers.com, that did work.
There is an e-bike dealer here in San Diego called mybikecommute.net. Yes, they have a website too (how did you guess?), and a store in the UTC mall at 4425 La Jolla Village Dr, a mile or two west of the Miramar Air Station. They had a dozen e-bikes there when I went there, along with the usual pedal-only "regular" bikes. The salesman was very enthusiastic about the e-bikes, and very helpful, let me ride a couple of them all the way around the mall, etc.
Most of the e-bikes he had, were from San Diego Electric Bikes (www.sdelectricbike.com). Patrick at sdelectricbike.com is tremendously enthusiatic and knowledgable, I think he runs his enterprise out of his home, converting bikes to electric power. He loves Aotema hubmotors and swears by them for their reliability, and is working on a controller which he hopes will not have the chronic problems many controllers have.
Black Mountain Bicycles on Black Mountain Rd. in San Diego, presently has no electric bikes, but the owner (Brian) told me he will be selling the Trek line with their Bionx motors, as soon as they are available in quantity. Brian says these will be far and away the most reliable complete bikes on the market. Brian has sold electric bikes before, he mentioned the Giant brand, which he said was fairly good while they were available. He is very enthusiastic for e-bikes, but says there are a lot of them around that are junk. He absolutely does not want to sell any e-bikes that are going to come back numerous times for repair or replacement of parts, batteries every month, etc. He points out that some customers will abuse their bikes, sometimes unknowingly, and the bikes have to be able to stand up to that abuse. I got the impression he was not interested in converting bikes in his shop, though I could be wrong about that.
I'll see if I can put mybikecommute.net into that dealers website, and maybe San Diego Electric Bikes too though he does not have a storefront. And Black Mountain Bikes when they get some e-bikes.