As far as cost, it really depend on WHERE you live in the US. I know some people pay an arm and leg for decent weed... Here in Texas 1/4 of high quality weed will run you about $80 bucks... However you can get some real quality schwag for $50 an O. The last stuff I got was freaking amazing. No seeds, little stems, little leaves, and two hits got you high ($50 bucks 28g).

I guess it also depends on who you know. Again, being in Texas = lots of Mexicans to befriend... If you know the right Mexican you can get some serious weed cheap