Well, there’s:
- Cheap Plastic (Most generic cheap chips), < $0.25/chip
- High-Quality Plastic (Matsui, Abbiati, Bourgogne et Grasset, Bud Jones, etc.), ~$2/chip
- Ceramics (Just dense plastic which has a design printed on it), ~$0.25-$1/chip
- Compression-molded Clay Composite (CPC, BCC, TR King, Paulson), ~$2/chip new, $2+/chip from CPC, and can be in excess of $10/chip when resold.
- Plastic with Silica and other Additives (AKA China Clay), ~$0.50/chip
- Acrylic/Cellulose Acetate (AKA Jetons and Plaques, by MSK, Bourgogne et Grasset, and Abbiati), Prices vary wildly from ~$2/chip to Millions of Dollars for a single plaque with diamonds and stuff
I might be missing something, but that should cover most of it. I’m not sure if china clay use silica, but they use some sort of additive to make them feel closer to clay. The general consensus is that compressed clay is the best, but there’s a few people on here, including me, who would prefer a great high-quality plastic chip to some clay chips. Plaques and Jetons are sort of a different category, but I included them anyway.