CAD for the DIY and USD for the linked setup. Good luck finding a supplier in Canada for anything under $200.$16 of activated carbon and $40 of parts ( according to your honesty). 1 hour to do (according to you) so we will say @ 15/ hour. So total cost no filter$71?
And for $100 you can get ducting, a fan, and pro filter with free shipping?
https://www.amazon.com/s/?ie=UTF8&keywords=carbon+filter+fan+combo&tag=hydusmmsn-20&index=aps&hvadid=78477646317080&hvqmt=b&hvbmt=bb&hvdev=m&ref=pd_sl_72g2dm83ey_b
Love diy but this one just doesn't seem profitable for me. Good vid tho!