The picture is a EPI belt and the price is about right too plus they have a EPI clutch kit very near it so I would say it was a EPI belt.
Click the link below and see if it looks like it and it is a EPI belt.
Yamaha Rhino Accessories Polaris RZR 800 Accessories Arctic Cat Prowler Yamaha Rhino Accessories - Teryx Severe Duty CVT Belt