You should have told the customer it was on sale. buy one at regular price and get a second candy at full price.

Tell him you like his face and you’ll give him a special price: Two for a dollar. ;)

offer to sell him half for 34¢. then sell him the other half tomorrow, also for 34¢

"Just for you, good sir, it's 68 cents. Take it or leave it."

"Sir, I wish to propose a deal to you: From now on, I will buy you one candy bar a day until one of us dies. In return, you will spend the same amount of time in servitude to me, doing anything and everything I tell you to do without hesitation, or asking any questions. You will be on call 24/7, and must always be within a 30 minute drive of my current location so as to ensure you are at my side when I so desire. If you agree to this deal, I will give you this candy bar once you have unclogged our toilets. What say you?"