I recently upgraded to a DSLR and so no longer need my Inon wet mount lenses. I have both the wide angle UWL 100 28AD and the macro UCL 165 AD along with the two lens "caddy" that fits on a ULCS strobe arm. These have been on one 10 day dive trip and are in like new condition. Retail for the set is over $500 - all yours for $300 and I'll cover shipping.
These are great additions to any set up! Take 'em on and off while in the water. The UWL 100 provides 100 degrees of coverage for those reefscapes that are otherwise impossible with a point and shoot. The UCL 165 can be "stacked" with another so as to provide even greater magnification for those pygmy seahorses. You will need to get your own 28AD bayonet style mounting bracket for your particular housing, unless you have a Canon WP DC9 (for the SD 800 IS) in which case I'll throw in the mounting bracket for free!
Thanks,
Phil