Recently i saw a kind of fan "air multiplier", also name bladeless fan in the market. I thought it is interesting but don't know if the price is reasonable, more expensive than i expect. They sold SGD 200. Do you guys know the price they usually sold, and when can i buy a cheaper one?
if it's $200, it's "cheap"
it's basically a fan crammed into the tube and the internal forces the air out around the ring... nothing fancy about it
p.s. patents say that others cannot copy it but look out for PRC knock-offs as they really don't give a shit about patents