You could price it in gold weight, understanding that the height of the stack of Federal Reserve paper meant to be an equivalent will vary day by day.
For example, a pair of Nike Air Jordan shoes costs 1/10 ounce of gold. Customers can either give you a 1/10 ounce gold coin, or use an exchange machine at the counter to figure our how high a stack of paper is required that day.
By the time a Zimbabwe-style trillion dollar note is required to pay for the Air Jordans (probably around May, 2018) you'll be glad your customers are already used to gold weight pricing. :)
But again, if the value of that 1/10th ounce gold coin could be $160 when I pick out my Air Jordans and drops to $155 by the time I get to the sales counter only to rocket up to $165 by the time I get to my car then have I gotten a good deal or have I been screwed in my purchase?