I sold many of my younger sister's outfits on ebay. I just sold them by the outfit, not lots. I sold at least half of what I posted, if not a little more.
However, there's one odd difference about my sisters' clothes...
My younger sister was *much* younger, and she was profoundly disabled. She stayed very, very small all of her 25 years. Also, her size changed very slowly throughout her lifetime. Therefore, we often bought her higher-end clothes, because she'd wear them for a very long time. Plus, because of her disability, they got extremely little wear. (She was non-ambulatory on her own.) So, unless she spit up on them or something, or unless it was something we really liked her in so she wore it a lot and therefore actually *did* wear it out, or unless there was accidental damage; the clothes remained like-new. Unlike most kids' clothes.
But anyway, I was rather surprised that I actually *did* sell so many of them so easily. I still have some that I'll be trying again with when the appropriate season rolls around.
But, I don't know that I'd go out garage sale-ing for clothes to ebay.
I've long thought about doing Mary's idea, though. Would you mind telling us how successful you were with that, Mary?
The other thing is, we have TONS of old stuff in our house. Because we're on the third generation of people who don't throw very many things away. Also, as I've mentioned before, this house is haunted. I've heard you can sometimes get more for items from a haunted house. Hee!
When I sold some of the stuff from our house before, I was so surprised at the things that sold, and what people paid for them. Just for the heck of it, I posted some old architectural catalogs from the 1970's. (Dad was a draftsman.) I sold them to different people, for the price of $10 (+/-) each! I got after Dad yet again about forgetting his cardboard apple-crate of old ham radio magazines out in the carport, where they got water-damaged, after we'd had them out at a yard sale. *sigh*
Practitioner of the Nerdly Arts.