"Sale momentum" refers to the pace or progress at which sales are increasing or growing. It indicates the positive movement or momentum in sales numbers over a period of time. Full definition
The positive sales momentum for the brand has continued this year. (topspeed.com)
This pricing strategy can help build sales momentum and reviews for the new book. (toughnickel.com)
New home builders need to build more affordable homes to maintain sales momentum because the payments on those new homes have risen even without any price increases. (aaronlayman.com)