Poor shopping cart experience
Can only buy product items 1 by 1 and not like a shopping cart where you place several items in it and then checkout as total purchases. Therefore, if you buy 10 items, you will receive 10 emails/notifications that order is been processed. Then another 10 emails that product is shipped. On a sale day, if i buy 100 items, that's 200 emails in my INBOX. !!!