What I normally do when I'm selling bowling balls (I usually sell 30-40 per year, all with 10 or less games on them) is put them on here with my EBay link. That way anyone interested can see the predrilled static weights, pictures of the ball, my feedback info etc. and they can make me an offer if they are interested.
If the offer is fair, or negotiated to agreement, I pull the ball off of EBay once the funds are in my PayPal account.