Going up in weight, grip changed, and I'm starting fresh for next season....

Now, how would you get rid of balls you no longer need? I have a dozen used 14 lbs ball sitting in storage, with another 4 being given away to friends.

I'd like to make a little cash, but who buys used 14lbs? 

I can try eBay, but do proshops, or schools buy used balls?

I'd like to make a little $$$ for nibs (3 NIB would be $460 - $500)  - balls are not cheap!

There are several users here who throw 14lb stuff(myself included).

 You could make a post in the for sale section, listing what you have for sale, and deal with people directly through this site.

 Then, there is e-bay.

 Depending on what they are, you could get some decent offers, especially if they are reasonably recent releases.

on facebook there is a bowling ball trading group. Sell or trade

I joined that group on FB.

The lower end stuff I can give away, but I have (all older balls) 2 balls with 3 games, 2 or 3 with less than 15 games, and then there's the rest I use in rotation - or other balls sitting there less than 25 - 30 games.

I'll try eBay and BR once I locate all the bowling boxes and shipping boxes here at home. Then I'll try youth leagues to donate too.

I also belong to the trading groups on FB (racks on racks, bowling ball trading post, etc) but haven't completed any transactions, simply because of payment and shipping issues.

I've found that the best way to sell stuff no longer needed-- word of mouth. Put it out at league nights, and let friends know. They can spread the word, and before you know it-- you'll have offers and new friends.

14 really shouldn't be that hard of a weight to sell, it's still a pretty common weight. 

I donate my used bowling equipment to the proshop and in return get them to drill up my equipment. I like older equipment, so most the time I want a ball, it can't be found in a proshop.

I used to do that with my shop...trade for labor

UPDATE:

I just sold 6 balls last week and 1 or 2 are pending. 5 locally and 1 shipped out.