Comment by dragonwriter

So, lobby for changes to the structure of those taxes so that's not a problem. Tthe simple solution is changing them from surcharges adding a percent onto posted prices to making them a percentage taken out of the posted price; so that coin availability is only an issue in the improbable event that you are paying your sales tax bill in cash.

Of course, retailers don't want tax-inclusive posted prices, but... ::shrug::