Just need a quick bit of help. I’ve been sorting out all my costs and advertising for my business to open beginning 2021. I have a few close contacts for diamonds and polishing but biggest thing I’m struggling to find is a caster because of how they price and understanding the cost. I have my own 3D printer and also wax grills my self. But a few companies are charging 26/28 pound per gram 9ct gold and 14ct at around 42 ish per gram. But some companies are charging like 2 pound per gram. Please send me suggestions and help me out on this little problem please so I can get the cost sheets finished and get the best casters in London. 👍👍