$500 sounds like a fair price if it's in decent shape.

Let me give you a slight warning about consigning. Recently I took three "junker" instruments to a guy who, for a percentage, would do all the work of selling them on E-bay: write-up, photos, shipping, dealing with Pay Pal, etc.

He sold an autoharp and a six-string banjo in the first week, but the relatively new Johnson 12-string, with an older hard shell case, just wouldn't sell.

We subsequently tried two more auctions - with no luck, so I went and retrieved it from him.   I didn't bother to look at the instrument for a couple of days, and and then I discovered the bridge was peeling off, probably because he had stored it for a couple of months without a humidifier!   I took it to a friend at a repair shop and he discovere that not only was the bridge peeling, the braces inside were warped also. Ultimately I kept the old case and donated a $120 12-string for parts to the shop.

If you consign - make sure they know how to take care of an instrument. This guy didn't, not his fault really, so I ended up losing about $25 all told !!