There are 18 words that start with 'sales'.
| sales | salesman | 
| salesmen | salesgirl | 
| saleslady | salesroom | 
| salesclerk | salesgirls | 
| salesrooms | saleswoman | 
| saleswomen | salesclerks | 
| salesladies | salespeople | 
| salesperson | salesmanship | 
| salespersons | salesmanships | 
Note: These 18 words that start with 'sales' are found from the USA & Canada version of the tournament Scrabble word list.