I would recommend googling the seller, call a gentleman named Richard for a slightly better deal. These older panels are getting phased out and most vendors sell them at close to cost.
@jaecjaec Have you seen the light quality yourself? My experience with high-output LEDs has led me to be skeptical of the seller's claim that "the 5500K daylight balanced LEDs offer a full spectrum". Most that I've seen had a tint of green or pale blue.
Agree completely with LPowell. I do have first hand experience with these panels. The best news is that they are being phased out. Hopefully the next generation will have better color.