Read her reply again.
I recently started selling some stockpile items on ebay and it's been going pretty well. Now that you can list 50 auctions per month with no insertion fee, there's really nothing to lose. I search completed auctions for the items I'm thinking of listing and see how they're selling. Get an idea of the price they're selling for and go from there. Yes, everyone is taking a cut (ebay, paypal, USPS) but if you figure that from the start and build that into your listing price and your postage fee, you'll be fine.
I won't list anything low hoping for a bidding war. Just not worth it to me. I don't have to run to the post office all the time thanks to printing postage online. If I have an item that's over 13oz I just drop it off at one of those USPS/UPS stores that's right near a CVS. They have much earlier hours than the Post Office.
The items I've been doing the best with are the OTC meds (Culturelle, Estroven, vitamins, etc) and Biore strips.
I've never sold on Amazon, Esty, etc and the Craigslist in my area is pretty much dead.