As super J said, check your LBS. I recently bought a grey Tacx replacement band for around R150. Sportsworld stock them but are currently out of stock http://www.sportsworld.co.za/product.php?id_product=1333
I saw your post and came across this site earlier today (thanks to the online store thread) Cape Multi It was a weird coincedence that I came across this and thought it was worthy of my second post
