If you drive your car at night at all, you're wise to steer clear, no matter what price you might find them at. There are legitimate (effective, safe, legal) LED headlamps to fit any sealed-beam car, but the RetroBrights are not on that list.
Morimoto is not a company, it is a brand belonging to TheRetrofitSource, a longtime US-based seller of (almost nothing but) unsafe/illegal lighting trinkets. They farm their production out to various job shops in China.
Correct—there are lousy DOT-certified headlamps, and there are very good ones, and a lot in between. And there are very good non-DOT-certified headlamps, too. None of that applies to the Retrobright things, which are fraudulently DOT-certified, lousy headlite-shaped trinkets.