Sea and Sea 6" Compact NX Dome, DX Macro Port 52 and 20L Extension Ring

Selling some Sea & Sea ports for the MDX system. Macro port is in perfect condition (never been taken underwater), extension ring is in excellent condition, and the compact NX Dome is in good condition, with just a couple very minor scratches as is common on acrylic domes. I couldn't even really take pics that show them because they're so minor. Won't have any impact on image quality underwater.

1. Compact NX Dome Port, 6" Acrylic. Backscatter link to product. MDX port system. Good condition, very minor scratches on acrylic dome that will not have an impact on IQ. Comes with neoprene cover. Asking $300 OBO

2. DX Macro Port 52. Backscatter link to product. MDX port system. Brand new never taken underwater. Comes with plastic cap. Asking $200 OBO

3. Extension Ring 20L. Backscatter link to product. MDX port system. Barely used and in excellent condition. Asking $100 OBO

Free shipping with the US. I'm happy to sell individually but would love to sell it as a kit - I'll knock $50 off if you want it all, so $550.

I'm selling this on behalf of my work (www.perryinstitute.org), so payment has to be done through an online secure CC payment to the org, just as a heads up. It's super easy :)