Amazon's mega "Prime Big Deal Days" kicks off October 8 and we expect some big discounts before the holidays — but we also predict some hot ticket items will sell out. Here's what we think will go faster than ever this year.

Smaller yet useful tech accessories — batteries, cables, phone cases and so on — are what keep the big ticket items going. And Amazon’s Prime Day is a good time to stock up on them. Only problem is, not everything on Amazon’s site passes muster,