Outta the box you may have to be willing to send the balls with some "good faith gestures" on your part. It's tough to try to gain trust right away. Posting an ebay account doesn't really help much either 'cause how do we really know that it's YOUR account?  Sorry for the cynical views, bro. I truly hope you're able to work with the folks on the site.  I believe you'll figure out who's good & bad over the coming months, as well.
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Return with your shield or on it.  Strength and honor.  Help control the population of Avenging Unicorns. Arm yourselves accordingly.  MTIXE

"I'd give my right arm to be ambidextrous."-Nick Faldo

Post them and see if you get any bites. That's the only way you'll tell. At least here there's no ebay fees and you'll never have to sell a ball for a very low winning bid. You can also check out the buyer seller feedback forum to see who's good and bad. People aren't shy here to tell you who's a deadbeat.
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3 holes of fun!!

My experience is that you have  more sophisticated buyers here than on ebay.  Don't expect to get more here than ebay.
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Those that can do. Those that can't complain. Pimpin ain't easy, but it's mandatory.

Most things we like, we don't need. Most things we need, we don't like. Don't confuse your likes with your needs.