For something like that it makes sense, but for stuff more expensive than that it’s just too much of a loss and for more rare or esoteric items I’d probably get even worse trade in value. I’ve only really used them lately for pedals and stuff I had worth less than $100 for convenience like you said (15 minutes away for me). They’re also friendly and I guess no need to worry about them complaining for a refund for stupid reasons like you get every once in a while from a buyer on reverb that you’re forced to give on there lolI've gotten $350 for an $800 guitar from Sam Ash. That's about what I'd end up with selling online; figure ask for $600 online, get haggled down to $500 or so depending how long it sits on there (could be weeks and weeks) Pay for shipping and possibly packing could run anywhere from $30 - $80. Then selling fees could be anywhere short of $50 give or take......ok so maybe you get a little more selling online, but my Sam Ash is only 20 minutes away so its super convenient lol.