Big Glass waterpipes are bongs. IMO they are the most intense way to smoke pot. Usually I'll pack a bit of batch in the bottom of my bowl the fill the rest of it with weed. For some reason I find the tobbaco makes the hit taste smoother.

Prices: Whe I was a newbie I paid: $10 for 1 gram
$20 for 2 grams
$40 For a half quarter (about 4 grams)
$80 for a quarter (about 8 grams)
$120 for a half ounce (about 14 grams)
But Nowadays It's more like: $30 for a half quarter
$50 for a quarter
$100 for a half ounce

So yeah as you become a more experianced smoker and get better connections prices will drop. Dimes and Twenty bags have consistantly remained at stable prices.