Ok, on the cheap...(you guys are gonna laugh)
I broke apart an air-hockey table that my neighbor was tossing out...and took the fan unit from it. I built a plywood box from a sheet of plywood, installed the fan (yes, it was brushless), and attached dryer vent hose to a plywood insert fit into my basement window. I then lined the walls and roof of the booth with furnace filters to pick up any particulates that didn't make it into the vacuum created by the fan.
It worked very well for about 5 years, then when I moved from NJ to WI, I took the fan unit with me and left everything else in place in the old house. Total cost...about $25 between the plywood, furnace filters and dryer vent hose. I also picked up a cheap turntable "Lazy Susan" from a kitchen store for $12...
Something to think about if you're handy with a screw gun and a table saw.
Jeff