Basically an 8th is 3.5g, if you want to be exact but
obviously it depends on you dealer and whether you get
mugged off or get a good deal.
It's 3.5g because an 1 oz. = 28 grams.
28 divided by 8 = 3.5 grams.
Over here an 8th of
bud is 20quid.
or an 8th of solid(hash) 10quid.