LG is an acronym for Lucky Goldstar, their original name. They are now called LS, short for LG Systems. In general, I don't think too highly of their drives group. They lied to me big time once back in the day when I was looking for a vector drive to brand-label. They tried to pawn off a V/Hz drive with automatic torque boost as a sensorless vector drive. They thought I wouldn't check under the hood I guess.
But Forrest, I think you meant SPEEDstar, not GOLDstar. I only see the Speedstar drives on eBay. Speedstar are the Polyspeed units mentioned by toolnut. Polyspeed used to be the exclusive brand-label in the US for the Hitachi drives, but they lost out when Hitachi finally decided to go it on their own. Now it looks as though Polyspeed is building these larger 1 phase input versions on their own. Not a bad strategy really, the VFD market is tough if you are not one of the big volume players now. But there is a sizable niche market for larger 1 phase input VFDs out there. A lot of farmers need them because the utilities don't want to run 3 phases out to one user 40 miles in the weeds. A company called Glenn Scott Drives used to do quite well servicing that market, but they got bought out by someone else and shut down. It appears that maybe Polyspeed has re-invented themselves to stay relevant. Find a niche and fill it...