$60 seems a little high. I paid $29.99 for my last batch of them (Black Friday). $50 and under is a good price IMHO. I have built alot of them. For the large majority they do just fine for budget builds.
I have run into excess anodizing in holes that I had to clean up, I have also seen some shipped with no bolt catch roll pin holes drilled. Just do a good visual on whatever lower you buy BEFORE leaving the store and 99% of the time you are ok.
My biggest knock is that hideous roll mark. Good lord, take the fucking horse off of it and just use text...lol
Lastly, you will find the anodizing colors to vary as well. Some seem lighter grey than others.
Again though, probably the best "bang for the buck" lower out. I much rather see folks use these than some bargain bin polymer receiver trying to save $10-$15.