lumatek 1000watt dimmable ballasts

I have 4 1000watt dimmable ballasts used for about 3months. both are in amazing condition and ive had no problems with them.
2: 1000watt dimmable ballasts 50, 75, 100% - 100$ea.
2: lumatek 1000watt dimmable ballasts 50, 75, 100, super lumens - 150$
Just give me a call if interested ill be happy to answer any questions.
Here`s a link to the cheapest new ballast i can find. Mine are just like these.
https://www.google.com/shopping/product/11931198361249956315?q=lumatek+1...