MarketPress product permalinks

Is there a reason why the marketpress plugin places the product tilte at the end of the url like http://skippersbicycles.com/store/products/a2b-hybrid-electric-bike/ in stead of somthing more like http://skippersbicycles.com/a2b-hybrid-electric-bike/
I guess what I want to know is there a way to change the permalink structure for the marketpress products?

Thanks
Chester