Pretty much all the place's that have been mentioned in here is where I buy kits from, I rarely buy kits from LHS, I buy about 95% of my kits from ebay, with zero problems . I buy from tower hobbies when I can use a discount code, like free shipping or $10 off, I just bought the Aston Martin DBS from tower, used the $10 off, so that made shipping free, and I used the easy pay option for the heck of it too.
I have not seen Amazon mentioned yet, but you guys should start looking on there as well, I was able to get Revells 2010 Camaro ss for $19. that included shipping, I check there now for kits I am wanting to get