$20 = (Dealer)

4 grams of standard (will murder lightweights)
2 grams of mids (one bowl will suffice for a while)
1 gram of KB (one-hitter quitter)

Friend prices = x2 amount

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If we're talking serious weight:

$60 - $140 = Oz of Reggie

$140 - $280 = Oz of Mids

$280 - $560 - Oz of KB

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Of course, I can buy a QP of mids for the friend price of 1oz of KB, so I smoke a lot of mids.

Hope This Helps