I looked everything over again and it appears to be in order. If we look at the Grape Wreck (https://silkroadvb5piz3r.onion.to/silkroad/item/ed1b4baf74), one unit currently costs 3.07 btc or roughly $15. If we increase the quantity to 20, the price becomes 60.04 btc or about 3 btc per item ($14.67). This is congruent with the current commission schedule. Regarding oso's purple kush, he is using pre-commission pricing and dollar pegging. The pre-commission price is set to $290. After commission, this is $311.9 or about 7.6% commission. At the current rate of 4.89 btc per usd, the current in-cart price of 63.78 btc is correct. I'm not sure why you were seeing 52.25 btc, but at the current rate it should be more like 59.30 btc.