I'm not sure there is anywhere in the Denver Area.
None of the manufacturer's are close by. But what you might do is see if they could ship it to meet your friend.
I don't know if it's applicable in your case but I recently posted some US prices for housings for a SB member to compare against in Norway, his price was better locally than the US price when you added shipping.
Video housing dealers are few and far between here in the states.
USVH is in the Seattle area - they sell direct.
Backscatter in Monterey sells the TopDawg direct.
Ocean Images is in Florida - again direct.
Ikelite is in Indiana, but they sell through dealers - maybe direct also.
Equinox is in Michigan - they sell direct and through dealers.
Some dealers to contact:
Aiko Trading in Oregon lists the Ikelite TRV-33 housing on their website:
Ikelite Sony Underwater Video Camera Housing/Waterpoof Marine HD Video Case
Other dealers you might contact:
H2OPhotopros in Los Angeles
Marinevisions in Texas
Reef Photo/Video in Ft. Lauderdale
B&H Photo/Video in New York
Adorama in New York
Not sure if any of them will have the housing for your camera in stock as it's an older model - technologically speaking...
I don't know how much you're looking to spend but since you're in Europe, I really like the looks of the Silverfish housing made in Germany. It looks to have a lot of nice features for the money.
I've never actually seen one in person but I have seen photos and a description from someone who owns one. And your TRV-33 fits it.
silverfish - Unterwassergehäuse für Camcorder