Much of the quality travel and camping equipment is pricy. I went into REI a couple weeks ago and almost had to have oxygen delivered as most of the prices took my breath away. But if you are traveling and want and need lightweight warmth, easily washable, breathable materials, etc....they have it. I also found it very interesting as one of the reasons I stopped in was because they were having a "Garage Sale". Everything was marked with a clear comment as to why it was in the sale or had been returned. One pull over was returned because it was worn and pilled.....another jacket had been returned due to a broken zipper another because of some slight staining..... So...what I gathered is exactly what my daughter had tried to tell me a couple of years ago when she talked me into purchasing a pair of Chocko's....the stuff cost way to much but if it ever wears out or gets messed up in anyway you bring it back and REI replaces it....
...Somehow I can't see wanting to purchase used underwear any more than I was tempted to purchase that pilly shirt....