That's so tough to gauge these days - that stock only a handful of years ago would have been about half of that price (I bought my son's RH for his Marlin at the end of 2016 for $93!), and of course, used condition of a budget friendly stock, eh, it's always kinda weird, some days we see used Boyd's stocks like that going on Ebay for near-new value, some days we see them going for about 2/3 new price...
How badly do you need to sell it? How quickly do you need the money back out of it? If you have time, I'd put it up for $200 and let it ride.