Bests & Worsts Reviews from Amazon

First, I received a 50 lb pair as a gift and based upon a previous experience with another brand weighed them. One was 49.3 lbs and the other 48.5 lbs (almost 1 lb different and neither one 50 lbs). Amazon sent me a replacement pair which I received a couple of days ago, one was 50.3 lbs and the other 49.4 lbs (again almost 1 lb different, but at least closer to 50 lbs). Today, I received a single dumbbell (not a pair, as expected) and it was 49.1 lbs. As far as I'm concerned - 3 strikes and you're out so all will be returned for a refund and I will purchase elsewhere. I've purchased other Amazon Basics dumbbells (15-25 lbs) and did not have this issue - they were the same weight and either spot on or within a couple tenths of a lb to the proper weight. Seems like a significant quality control issue at least with the 50 lb dumbbells!