I don't often outright endorse a company, but I have received excellent service from iHerb.com. They have great prices (beats all local stores!), a great selection, and reasonable and fast shipping. The more you buy the more you save, no membership required. In my last order, they sent me information on their rewards program... I can offer you $5 off your first order, and I get kickbacks from them when you use my referral code. I can confidently say you will get great prices and service from them (otherwise I wouldn't recommend them, even with the incentive!)
Check them out! Use referral code DAW630 when you checkout to get your $5 off.