GRT announced at Sun and Fun that they will be offering LPV approaches on their Hx/HXr systems when equipped with their $500 GPS. They caution that they do not have FAA approval; individual owner/operators will need to verify and document that the equipment meets the required specifications, prior to use under IFR. IMHO this is a tall order, bound to be opposed by local FSDOs. OTOH I see this as a good start in eliminating the shamefully high current price of entry-level approved boxes.