I don't feel like going through each brand and naming what is for sale. I also don't feel like going through putting them on ebay or dealing with shipping so this is worth a shot.
If anyone in the Orlando or surrounding areas is interested in buying some used single drill bowling balls let me know. I am selling 15lb EBI (hammer, track, columbia and track balls).
I also have a ton of 16lb balls for sale as well. If you are seriously interested let me know.