Im thrilled with my two mars 300w 2 pack from ebay for $140... but i just use them as suppliments to the 1000w hps... id be cautous buying my main fake sun from a no brand ebay buy though.
Most of that crap made by same or similiar factories with anyones name on it. Look how ,many you see look the same and they ahve different brand names. I know this further as i ordered a "middle of road" priced hps bulb off ebay manufacturers website looked legit . They shipped me two seperatly instead of the one i ordered (that was a bonus, i called they said keep em both) problem for them is both bulbs were in differnet boxes, they were supposedly the same bulb right? They just accidently sent it twice. But one was in glossy carxboard box w fancy marketing all over it. The bulb had the brand name in gold print at the base. The other was in a kraft faced plain cardboard box witn a label w the right name on it on the end. Label was like an Avery return address label you could make on your home computer. Bulb had black printing of wattage only on the base. I called them, they asured me it was same bulb just diff packaging. There was a printing i could see under that label on box and i deciphered it and started playing google PI. It took a minute but i found em, a nice chinese comany they make several hps bulb qualities and will gladly sell you whatever grade you would like and if you want you can pay a bit extra for it to be customised with things like your brand name in gold at tbe base and printing of whatever glossy graphics you provide them on the box... so baam you can have your own private label bulb set up for you... same comany would make you leds, and just about anything else you wanted to brand up and peddle...