Picked up a JAMMA harness and a few other things about a month ago for the tabletop multi I was building. The Chinese-esque quality of the harness isn't the best out there, but all I needed to get the job done. With my luck I am surprised none of the harness components have proved problematic as they do seem very brittle.
Their prices swayed me to place an order with them; but after my order a hold was placed for double the purchase price on my debit card because I attempted to place an order with a shipping address different from the one listed on my cardholder account. The hold lasted for nearly a week and proved to be a big headache, although I guess it was essentially my fault for assuming I could ship to a different address than the one listed on my account. Regardless, this issue steered me away from ordering at jammaboards anymore.
Shortly thereafter I ended up losing my Bob Roberts virginity and am glad I did! Cross shipped my first order and sent me some free Halloween candy to boot. I'll be going with him for many a future purchase.