That's just a 65 watt, highly overpriced CFL. You'd need at least 3 of them to grow anything useful. For the same price (after shipping) you could go to home depot and get five 42 watt CFLs for a total of 210 watts.

The auction's claim of it being the same as 500 watts of HID is 100% bullshit. It's equal to maybe 35 watts of HID. Also notice the seller's horrible feedback.