Ya...I was taught to use pennyweights, and most of the buyers in that area used them and even most people selling to us. I really never understood why or where that originated in that area. Almost, all used penny weight. Every once in a while someone would ask"how much is that in grams".
But hey!!! It works the other way too! That guy that asked what it was in grams first thing in the morning? You forget to change the scale back to DWT and buy the rest of the day on it. That makes for a bad day!!!! And I have done that more than once!! Paid DWT price with the scale still on grams.

Yep!!! Been there done that!!! Figure it out the next morning when you are trying to sort from the day before and numbers aren't working out with your paper. "wait a min.? I should have over 300 to send? OHHH @#$$#W#$%%$ !!! I did it again!!"

after the second or third time? You don't forget again!
I also have to say....Not all buyers using Dwt are trying to rip people off. That isn't correct! That was never my intention at all. Even our paperwork from the refiner used Dwt. For 100 dwt you get one rate, 300 dwt another, etc....
If you are taking a pile to a buyer? It doesn't matter if he is using grams or penny weight? Your end number for your pile is the end number no matter how it was figured! The method used doesn't change that! I never understood the complaint of "it's used to rip people off!" ...How? You ask...What are you paying per ozt on 14k then! Or is that price for pennyweight or grams?
They don't rip you off anyhow! People rip themselves off by not learning what they are selling. That happens to all of us in everything. I've learned plenty the hard way!

and to move any volume you have to pay high and fair!