Is this amp worth selling?

I have an Aragon 8008BB that I have replaced (with Bel Cantos), and I am wondering if it is worth selling. Cosmetically it is in decent shape (it has some small dings but nothing major), but it does have an issue - which is that when it is first turned on (before it warms up for maybe 5 minutes), it has only 1 channel. After that, it is fine, and since I always left it on, it didn't matter. I have the original boxes, but I have no idea what to ask for it or if it is even worth selling. It has been a great amp for me since I bought it new about 16 or 17 yrs ago. Anyone have a theory? Thanks.