Heather Day-Thorburn is co-organizing such an event for March 23rd, where a large group of people will descend on a single store in the uptown and each person will spend 20 dollars.
She tells CHSJ News she use to own her own business and she knows how difficult it can be to make it work.
She says it's a great way to support local businesses and other cash mobs will be planned as well.
To get involved, search "Cash Mobs Saint John NB" on Facebook or @CashMobsSJNB on Twitter.