How can I find out how many sales direct competitors are making?

It can be very beneficial to gain an understanding of how many sales direct competitors are making. This can help you to validate your niche and be confident that there are successful business operating with the same model as you within a certain niche.

A good way to determine whether frequent sales are being made is by checking out the reviews for a direct competitor. If they are receiving reviews regularly and recently, you can be confident that they are generating consistent sales. 

Also by checking their social media you may see customers showing off their products or further reviews to validate their sales.