I did a search about a week ago and Provantage was still the cheapest. Let me rephrase that, of the companies on the net I've actually heard of, they are the cheapest.
Skull, I'd still strongly urge you to fashion a strap to the pedal you are going to be using. The springs are light enough in the CH pedals to control them with one leg but when you need to 'pull' rather than 'push' a strap would do wonders to increase control. Or you could attach a comfortable shoe or durable slipper to the pedal and just secure your foot inside of it prior to logging on.