Hi all.  I haven't bowled in many years and was going through my garage and found my old bowling ball.  It's a Bonanza with a yellow dot, beginning with 1P serial number.  It's a 15lb, drilled, and (sadly) has my name "Jeff" engraved in it.  I'm thinking of putting it up on Craigslist for $10-15 with its Brunswick bag with rack.  The ball was used for about once or twice a week for 4-6 months, and has some scratches and scuffing.  I stumbled on many articles about "yellow dot" balls, and some people seem to covet them.  To me, it's an old, drilled ball.  Do you think I'm pricing it right?

Thanks!
Jeff