My local supplier stocks the Enermax UCTP12P Twister Pressure 120mm PWM for £8.50 so if you can find one in Canada it might be what you are looking for and within your preferred price range. To quote "...The new Enermax Twister Pressure fan is designed especially for the use on CPU coolers and radiators. Due to its innovative shape and quality structure the Twister Pressure fan achieves an exceptional high static pressure and cooling performance while generating minimum noise....". This fan has built-in PWM control via a manual switch allowing a choice of three PWM fan speed ranges, 500 - 1,200 RPM, 500 - 1,500 RPM and 500 - 1,800 RPM. Haven't heard of it before, so I assume it is relatively new to the market.