NEW YORK (CBSNewYork) — It used to be retailers would charge one price for a product, and maybe put it on clearance at the end of the season.

Now, prices can fluctuate by the minute, but there is a way you can make it work to your advantage.

Experts say ‘dynamic pricing’ is used on every type of product and service from apparel and electronics to Broadway theater tickets.

CBS2’s Ali Bauman spoke with personal finance expert Jordan Goodman, and author Staci Gerardi about unwrapping holiday savings. suggests 15 different ‘shopping bots’ to assist with the task.