The US Mint lost $69million last year making pennies https://qz.com/1318203/making-pennies-costs-the-us-mint-millions/
My understanding is that Canada solved their problem, sort of, by rounding all payments up or down two or three cents. Things are still priced with pennies ($1.42, $2.79, etc.) but you actually pay $1.40 or $2.80. Here's my plan: national US lottery where tickets are bought for 200 pennies. That'll get zillions of pennies out of those jars and back to the government, which melts them down and sells the zinc to the galvanizing and medical industries. Lottery winner gets the $69 million that'll be saved the first year.
Considering how much value the U.S. dollar has lost in the last few decades, it might be simpler to kill the nickel too and just drop a decimal point off of prices. I love it! But there are a few hundred billion pennies in circulation, so if your plan works you may have to offer a considerably more attractive payout!
Absolutely correct. I've had 22 pennies in a cup on top of my fridge for several years now. Never completed the roll. If you're paying cash, it works exactly as Dr. Bear says. If you're paying by debit/credit card, you still pay the exact price - no round-off.