Thanks all! Lots of awesome info!!!

I am not going to be selling online at all - I am only doing a tiny startup to sell to friends/acquaintances, and POSSIBLY do our local flea market now and then. It's more of a "retail" market, so these would fit in just fine. With it being an outdoor/indoor market, setting up outside should attract the smokers.
Admittedly, I ended up ordering the 510 kits since my supplier is out of white d-1 kits (and the noobs mostly want white since that's the closest to an "analog"). I only ordered 4 kits though (one is already sold), so if the 510s don't quite do it for folks, I'm not sitting on a ton of kits.

This is my "feeler" order.
I've sent at least 10 people off to the net to order kits, and I know of at least 5 that definitely ordered, and of those 5, I know at least 4 are now quit from analog hell.

I know if I had the kits in my truck, I would have sold them then and there.