Amount for a Ladies Sweater

Most auctions on ebay have a maximun of 10 - 50gram balls of yarn. Would that be enough in worsted or DK to make a womans sweater?

It depends on the yardage and the size of the sweater. There’s more of it in a skein of DK than worsted, but it knits smaller so you need more yardage of DK than worsted.