I am coming very late to the party here, but the guys that make these products have to pay employees, pay the light bills and pay the rent plus buy the raw materials, shop supplies and pay equipment depreciation & transporation cost plus make a profit...I think a professionally made at $300.00 dust cover from Gingko is a steal..
I just ordered a custom Cloud 11 and I think it is quite a bargain compared to many of the $$$$ overly inflated and often ineffective products out there..My 2 cents