the one stop diy shop charges double the unit price for bottles than if you were to get them from us plastics.
i like
http://www.diyflavorshack.com/SearchResults.asp?Cat=3 dawn has some great kits there, and she throws in extra stuff on each kit. i have had the kit for a couple months and still use it when whipping up a batch of juice. if youre just starting out and want to get not just bottles, but pipettes, syringes, flavorings, funnels, unflavored liquids, VG/PG, menthol crystals, cart fillers, tweezers, etc....AND a toolkit to keep them in, check her out.
but if you just want the bottles, go to us plastics. best prices that ive found. the smallest order of 3ml bottles and the best shipping price is 22 of them. for the 6ml bottles it's 18 of them. seriously, play with the quantity in your cart, you will see that shipping prices vary WILDLY, but the most reasonable shipping rate comes at those quantities.