I have them I like them a lot. I don't know if the flasher he's sending out, if you choose to buy the flasher from him, is a working one yet but most people aren't having a hard time finding one themselves. It did take me trips to 6 different autoparts store in my area but I do have notoriously bad luck.
The only complaints I'd have about them is they could be a bit brighter during the day and if you have the turn signals on your mirrors you'll notice they're a different shade of yellow. Of course that's only cause I don't have LEDs in there yet but still.
Either way I think they're worth it. Gives the car a more unique look at night and they match HIDs very well.