Before I built my own, I had thought of getting that one. I read what I could find on the 'net, seems it's a handy little thing and useful, but the reliability of the fan motor appears to be an issue. Some failed right out of the box, some others worked for a short time then quit. It seems IF you get a good one that holds up it's a great tool, but if not it's wasted money. The seller is reputable and will stand behind it for the warranty period, but for long term dependability concerns, I decided against ii.
Take a look at "make your own spray booth" on youtube, it can be done with simple storage containers and a fan, ducting to window for exhausting fumes is also quite easy. Otherwise the big name booths are spendy, but good. Making my own with wood took some time, yes, and all told more than $120, but I was able to make it the ideal size for my needs.
Quality wood products and construction materials are not inexpensive, nor are explosion proof fans, but making your own is actually quite satisfying and an enjoyable process. Then, you have an implement that will hold up and be just right for your work space. Just my 2 cents.
Patrick