My mother would see something labeled $2.95 and she'd think $3, and then later she couldn't remember if it was 3 or 3.95, so it had the opposite effect from just pricing it at 3.
Same thing with bigger amounts like $29.95 or $299. She'd think 30 and replace that with 39, or 300 and then think 399.
Me, I can rarely remember numbers at all.
Not the same thing, but in NYC, because of Times Square, way back in the
50's or 60's they passed a law that a store can't go Out of Business for more than 3 months.