Ordered from them about 5xs, now. Never any problems. Often has discounts. Price compare w/ Amazon. Usually cheaper, but occasional product costs less there. I initially found Iherb searching for a good price on a couple of products and they had the best.
They tend to be to low end on cost and have free shipping over a minimum purchase amount. Currently, a sixty dollar minimum, but always check.
If you sign up for emails for the sale and discount alerts, they send a reasonable amount, not over the top!
Be sure to create an account. They keep track of purchases, so you can refer back to them when deciding what to order. They will also notify you if something out of stock comes back into stock.