Well the first design isnt all that diffucult at all, just 4 pieces of roundstock, 3 are bent on probably a hydrualic mandrel (aka hydraulic pipe bender, you could possibly use a conduit bender but I would probably wouldnt reccomend that unless you are in a pinch.) <heh puns>

The second design he has in there is very nice, but unless you are bending the pipe yourself it could get kinda pricey to have that made.

I cant say i've ever seen one of these closeup. Only pictures on the web. I'm not sure how he has the wicks mounted on the fans. I'm sure their is some kind of specialty hardware that he found.
I mean you could thread some ends onto the pie with a die kit and just washer and nut it on, alternatly I could look at a bass pedal for a drumkit and see how that is attached. I dont remember off the top of my head.

I have no idea what the dimesions of the fans are so I cant crunch any numbers to give you an idea of what it would cost you in materials. I'm also not sure what kind of metal he used. Again since I dont have any experience with this art form I couldnt make any reccomendations there for tube or solid stock.

I mean the solid stock is definetly safer, but it's also heavier. If you can give me some dimensions (length) and approximiate weights for the fan I could give you an idea of what to expect for pricing.

I'm not sure what else you want to know. I have access to all the equipment to make these things, or I can give you the terminology so that you can go to a metal fabricator and speak her language. it's up to you.