Nors tiesiogiai 'crafts' reikštų 'amatai', manau daugeliu atveju taip galima versti ir 'amatininkystę'. Pavyzdžiai internete:

pagal Amatininkystės įstatymą
accordance with the Crafts Ordinance
http://eur-lex.europa.eu/Notice.do?mode=dbl&lang=en&ihmlang=...

Pagalbos prekybai ir amatininkystei mokestis
The tax to support the trade and craft sectors
http://eur-lex.europa.eu/Notice.do?mode=dbl&lang=en&ihmlang=...

Dar, priklausomai nuo konteksto, "craft industries", "engaging in crafts".

Crafts - amati, vertimasis amatu/amatais
Amatininkystė - craftsmanship

Unfortunately the context is missing. I can see where 'trade' could be a suitable translation, such as 'to learn a trade' or 'to practice a trade', e.g. to learn to be or to work as a potter, where prekyba would not be suitable.