The term "carriage trades" often refers to high-end luxury goods and services catering to wealthy clientele. Some potential antonyms for this phrase might include "budget trades," "value trades," or "discount trades," which could refer to more affordable goods and services intended for customers on a tighter budget. Other antonyms might include "everyday trades," "common trades," or "mass-market trades," which don't carry the same level of exclusivity or prestige as carriage trades. Regardless of the specific antonym used, the phrase is meant to convey a sense of contrast with the luxury and refinement associated with carriage trades.