Approximately US $220.94
If you place any value on the signature then that's really in line with the market, I think. Discogs says:
Last Sold: 10 Mar 16
Some folks probably got it for a lot less when Spiral was selling his stash a few years back, but before then it was damned hard to find except for that "extremely rare records" fool on ebay who's had a signed copy listed for $999 for years now. He currently has 3 copies on ebay, and thinks that the red "distributed by K" stamp on the back adds $150 in additional value.
I think I paid $120 or so from mine, shipped from the UK. Got SM to sign after a show on the MT tour.
I don't think I could handle the anxiety of selling off a record or two at a time. I'd sell one and then probably freak out and re-purchase it before I could sell a second. I'd probably have to sell to a record store and take a big hit.