Where can I get them?
Do local stores have them?
How much do they typically cost?

You can get them at a hydroponics shop or order them online. There are a lot of great online stores that compete for prcies.

thanks
i have a local hydro store i think i'll do that
:]

Cool. I have a 100 watt MH and a 1000 watt MH and I really love them and so do my plants
Good luck

Is that what you use for all your grows?
and also I read something about them having a short bulb life..
Any experience with this?

I'm not sure . This is my first grow with a MH and I have no regrets what-so-ever. I got a Sunmaster warm deluxe so i did not have to get two bulbs.

well that's good to here
from reading grow journals and what not it seems like MH are worth it right now i'm using CFl and they are working but I'm gonna bring in a MH or flowering and see if that gives it a boost..
you think you'll get a significant yield increase with MH grow?