The Prime Big Deal Days event is on October 8 and 9, but we're already seeing mattress deals from Purple and Nectar, with up to 51 percent off.

The pre-holiday season savings event is officially kicking off on October 8 and ending on October 9, but mattresses are already as low as $218 (with over 1,000 five-star reviews ), and price cuts are as high as 51 percent off top brands like Casper, Nectar, and Purple. (Seriously, this Casper mattress is over $1,000 off right now.)

It’s not always possible to shop for a new mattress in person. In fact, traipsing from bed shop to shop can take up a lot of time, which is why many people choose to buy their mattress online. Whilst that's easy and convenient, are they any risks attached to it that you need to be aware? We take a look at the pros and cons right here.