As popular as they are, and gaining all the time, any given shop in our locale, of which there are MANY - out of 50 bikes on display they may have 5 electrics. Frankly I think the dealers are a little afraid of them, for several reasons...
1. They don't want to get stuck with leftover or outdated inventory
2. They're twice the cost of pedal bikes, sometimes more, so it's a bigger investment for each inventory item. I don't know what kind of flooring plan they have for bikes - probly 30 day terms if they're lucky. Evidently there are not nearly as many prospects looking to shell out the $$ for an ebike compared to a regular pedal bike.
3. There are still some hold-outs that think ebikes are not real bicycles, ESPECIALLY in the mountain biking sector. DAMHIK
I've been into a couple of high-end name-brand shops asking for ebikes and they give you the deer-in-the-headlights look "No, we don't carry those". WHAT???
When I was eMTB shopping I wanted to try the brand new TREK RAIL5. NONE of our local shops are even going to bring them in. In my mind, how do you sell them if you can't show and tell them? Oh yeah, "We're only going to stock the carbon fiber one". Oh, the one that sells for eight grand????