If it is only FBA clothing,
From looking at the labels offered, I assume it's brands that have entered into agreements with Amazon. I also have a few doubts about "shipped by Amazon" but maybe Amazon is going to buy a huge inventory of clothing and store and ship.
This is no different than other places I shop online; a free return label is included in the package (with certain restrictions, such as Amazon's is return within 7 days). The places that include return labels and the mailing costs are then deducted from my refund - aha - they don't know I know how to ship a scarf for less than $9.50 and I print my own mailing labels.
I see ads quite a bit on the few hours I spend on television for similar "try on" sites and these new "made to order" clothing places. My oldest daughter has been using some of the more well known (names escape me) online sites that do try-on and return for years.
In other words, this is not a new concept. And it's something ebay can never replicate which is why we get the only part ebay can offer - free return shipping.
Now, back to look at a few Elie Tahari things on Amazon that I thought hmmm...20% off first order...
Sherry
=^.^= =^.^=
( ) ( )
" " =^.^= " "
