I order from Amazon monthly. Amazon and its sellers are very reliable, including their adequate packing of fragile items that is most important to me. Incredibly fast delivery time, beating walmart.com by miles in this regard.
Wish that delivery costs from outside businesses to Prime customers were more lucid. Buyers must go back and forth adding and removing item from cart to compare shipping costs.
After buying two energy saving toilets on a tax-free weekend, sent email to Jeff Bezos about removing local sales tax from order. Received a reply that refund would be issued, though this never happened. This is a minor complaint, considering great products are received without damage, quickly, and at a great price.