We sell 312g bags only (as opposed to 300g) and you can call it 12 oz if you want, but that's 340g).
We do this for a host of reasons.
We are a small micro roaster and the quality and freshness of the coffee for the time our average customer uses it is of utmost importance to us. We started with the traditional 1/2# and 1# bags and as a small roaster it's hard to maintain inventory and quality standards with 2 different size. We never let any coffee on shelf for more than 10 days, although generally it's about 4 to 5 at the longest. For us the 1/2 pound people didn't generate sufficient revenue as it wasn't based on volume, and the whole pound people took too long to use their coffee which does two things: it compromises the quality of the coffee while the customer has it, and it slows down their need to return. The other reason was after our third year of roasting, online sales came into play. The cost difference, especially when shipping cross country, between under and over a pound is quite a bit when you factor in the price of the coffee. In the beginning, I discounted shipping rates by $3, just to give out of area people who really wanted our coffee a price break as a "thank you". Due to cost of product going up and shipping rates increasing in the midst of all of this was another reason we made the move from 1# to 312g, and just do Coffee Subscriptions, rather than single bags, online.
So now, everything is uniform. I roast 3-4 times a week. And we sell 312g bags of whole bean (only) from $18-$24 depending on the coffee.