BikePakUsa via eBay offers a BV Bike Commuter Rear Carrier Rack Holder, model no. BV-RA18, for $19.99 with free shipping. (Amazon has it for a few cents more with free shipping for Prime members.) That's the lowest total price we could find by $11. This rack fits most 26", 28", and 29" bicycles and has a weight capacity of up to 55 lbs.