Good luck with your 'getting rid of' project. So far I have never succeeded in getting rid of anything on USG (even when I have offered to post without charge) unless it was a swap for items both parties wanted specifically. This is probably because in the UK people do not want to reveal their addresses.
Just a thought - it is obvious what a few of the brands you want to get rid of are from the waistbands but there is no clue for the vast majority. Might it be an idea to name the brands of the others?