Amazon Prime Big Deal Days launches soon: 5 things you should know to find the best sales

Amazon Prime Big Deal Days will begin Oct. 6 at 12:01 a.m. PDT and run until 11:59 p.m. PDT on Oct. 7. That's two full days of deals for Amazon's annual fall sale.Before the sale starts, we want to ensure you're set to score the best prices. First and foremost, you must be a Prime member to receive discounts on select items.Related: Amazon, Target and Walmart all have big October sales, but which one is the best?Right now, you can sign up for a free 30-day trial of Prime. After that, an annual Prime membership costs $139 per year or $14.99 per month. Students and those aged 18 to 24 can receive a special discount and get Prime for just $7.49 monthly. Income-verified customers or those eligible for government assistance can get Prime for just $6.99 per month.If you don't use Amazon much, the cost of joining could negate any savings you may get during the sale. However, if you are already a Prime member or want to become one, there are a few things you'll want to keep in mind.How to preview Amazon Prime Big Deal Days salesYou can preview deals on the Amazon website or the app and then enable push notifications to alert you when the sale starts.Since quantities of certain items will b...