Save AU$39.01 Most electric toothbrushes can be expensive, but this Sonicare Series 2100 is brilliant value at 50% off. It promises to remove up to three times more plaque than a regular brush without being too harsh on your gums. There's even a timer feature that you can use to know exactly how long you need to clean each part of your mouth.

These savings on simple essentials can make your daily routine a little easier and your budget stretch a little further. To take advantage of all the Prime Big Deal Day deals, you’ll need to be an Amazon Prime member.

This year, Amazon's Prime Big Deals Days event runs through Oct. 9, and we found fantastic tech sales that costs less than $50. Yes, that's right. The products in this list all fit the "under $50" criteria,