Are all "high output" bulbs created equal?

ideit

Well-Known Member
So I'm getting a head start on planning a new grow for a move a few months ahead. My setup is most likely going to be a vertical grow using 4 400w hps bulbs with digital ballasts.

Anyways, I found this on ebay

It's a 400w high output (55k lumens, same as name-brand) and it's only $25 after shipping. Compared to Agromax (same lumens, same wattage) for $60 after shipping.

So, is there a difference?
I'll pay the $35 difference if it's worth it, but it sounds too similar to warrant that much more cash. Especially since I'll probably be getting 4 of them! That's a $140 savings...
 
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