Wet Sounds - Swivel Clamps

I have a pair of WetSounds Swivel Clamps that I didn't end up using. Brand new, never mounted on anything. These are the for the 1-7/8" - 3" tube diameters. They are $400 on their website. I'd take $350 + $10 for shipping.

I'm located in southern NH.

I'll probably try putting these on eBay soon, but would take $300 shipped if anyone on here is interested.