I suspect it depends in part on where you live, but I just advertised some of my SLW on Craigslist (thinning the flock) and people are beating down my door wanting to buy them. They are hatchery birds, although reasonably nice for hatchery. In my area 20.00 for 9-18 month old birds seems to be the going price for other breeds, so that's what I listed them at. It was obviously to low based on the number of people that wanted to buy them all, without even knowing how many I had. What surprised me also was the number of people who want my rooster. I would say 80% of them.
It may not be the same in your area, but there is definitely a demand for rehoming here. I may start hatching eggs from the ones I'm keeping, we'll see.