I just bought one today, total shipped was around $20 for the 27w 6500k model, not that I need one as I have a industrial ozone generator I use VERY sparingly, a can filter and a bunch of Hepa and neg. ionizers and a UV duct system, my place is odorless, hell even my cat litterbox doesn't stink. But I like to tinker with stuff and bought the Puralite rather than the Titanium dioxide type.
I did some research and looked at these odor removing CFL's, here's something I learned, there are two types.
The Puralite has a
negative ion wick (the one I bought) I included the link because it took some looking to find one that doesn't require a min order amount) the other type is a cfl that's coated with Titanium
Dioxide, in my opinion, the Titanium Dioxide would seem to be less efficient being that it also creates neg ions. I may have to buy that type as well to compare.
Heres a pic of how it works(attached thumbnail photo) (once I get it, I'll make a few comments here about it's effectiveness):