Ceramics, specifically cheap Tina/Alibaba ceramics have a critical role in the chipping kingdom:
They offer the ability to secure an inexpensive, customizable set that allow a host/chipper to validate their assumptions around set size, betting structure, and chip design or be more care-free about their chips.
Starting a new game? Shifting formats? Uncertain how many chips of each denom to buy? Want to see if you like a certain custom design or test-drive a casino set? Want a temporary set while you figure out your permanent set? In college or high school? In an environment where your chips could be lost/damaged/stolen?
Cheap ceramics are perfect.
If you want something of higher quality and more permanent, but still reasonable? Then quality ceramics (BR Pro Poker/CPC/SunFly) and even custom high-end plastics (SunFly/Matsui) could be a great deal.