HEY ORANGEMAN

GO to ebay and you will find alot of them for under $30-$50 that is alot cheaper than some of the homemade looking ones on ebay and I PROMISE more powerful than them. And the carbon replacement filter needs replaced like very 3-5 months and is ONLY $10... per filter and is double wrapped.
We were just ready to buy one of those home-made looking ones off ebay on Sat. and ran into this one at parents house. My feelings is they r well worth the weight in gold compared to other ones.And we only sat ours on the FIRST setting and it cleaned room in like 3 minutes flat.

Jamie & Stacie.

p.s. here is one here cheap if u r fast....

http://cgi.ebay.com/ws/eBayISAPI.dll...7022&rd=1&rd=1