Like a lot of folks, I'm done selling on ebay. I'd rather take less money than deal with it. Craigslist has been a waste of time. In my area, it seems like Craigslist is for bottom feeders who are looking for free ____. I'm not on Facebook or I'd try Marketplace. I was going to set up an idle FB account but if you try that, they throttle your account and you don't get access to Marketplace. So OGR it is!
I sold some stuff here on OGR last fall. I was happy with the results. For me it's about getting rid of stuff. I don't expect profit. Just like most things in life, if you make money on the sale, it's because you bought it cheap! I mostly determine sale price by checking the sold listings on eBay and then knock off a few bucks. Sometimes I just know what things go for.
The mail was a disaster last year so I didn't use them. The UPS Stores near me are a rip-off (UPS Stores are franchises). FedEx has been my go-to shipper. Since their stores are all owned by FedEx, their online shipping calculator is accurate to the penny. In my OGR listings, I ask folks to send me their zip code. I can quote the shipping to the buyer and be accurate.
It does seem like a strong market right now. This fall (train season) I'm going to sell off a bunch of modern Standard Gauge. That's going to be a bear to ship (840 Power Station! ).