Can you have too many returns to Amazon?

I have returned quite a lot of clothing over the summer, and notice you have to give a detailed reason for some returns. Recently one of the items I was going to keep which had the labels still attached dropped in price by about 40%. I sent the back the one that I bought a few weeks ago and ordered the same item at a reduced price. I struggled to find any reason for this in the drop down menu..

So I am wondering if Amazon actually keep an eye on such things and could they take issue with the amount of returns? The way I see things they tend to play musical prices with different sizes of any garment so there is an incentive to keep checking the price. Also, it seems to naturally be the case that most clothing isn't a great fit.