I don't know the exchange rate but $200 CAD for a used Vortex is too much. You can buy them new for $150 USD at http://www.marylandhydroponics.com/i...ugal-fans.html

4" Vortex is $108 USD.

Look for a thread here by Jamstigator...he has an awesome cab setup for flowering. I'm at work right now but if you can't find it, I'll post a pic of his setup when I get home.