Consider yourself lucky that I cut the over-long biographical introduction about my views on shopping and the effect of going back to school on my budget. I can tell you right now: neither funny nor interesting.

But for your curiosity, I chose women's tops because it's an item I buy, it represents a good portion of Goodwill sales (though I don't know how much), and it gives some consistent area for comparison more than if I was looking at, say, everything from old TVs to ceramic knick knacks.

I'm pretty thrilled you read several paragraphs though, haha.

Based on my bunch of visits to local second-hand shops (not the US), women's clothing overshadows the supply for men, so much so that those are basically ‘women's second hand clothing stores’. And I'd easily expect tops to dominate the selection.