ITA, and I really like the recycling aspect of using (almost unused) clothes. A mention of this and mom's sales would probably be good.
While these can be great places to find bargains, I know at least a couple of Goodwill stores that are both expensive (believe it or not) and junky. So it might be a little hard to rate or otherwise assign a quality to such places and/or the clothes you can possibly get there....
-Ivy
Parenting two active, wonderful boys
This is your world. Shape it or someone else will. -Gary Lew