I can't directly buy at amazon because of shipping problems. I guess will give no trouble as for check delivery (I'm a newbie, and I've never get my earnings yet) No matter what, I think amazon is the great place to buy.
If I can't buy it at Costco I get it from Amazon ... best part shipped to my door when you live in the tules and sometimes free shipping. I did not realize that Amazon had just about anything until I started selling for them about 3 years ago. Commissions are low but the products convert well due to branding and prices.