Orville Redenbacher White Corn Gourmet Popcorn Jar 30 oz

Q: Why is quantity 6 sell for $35 and quantity one sell for $15?

To get you to buy a bigger quantity which equals more money spent

Q: Can any popping corn be used in a microwave popper?

Yes, as far I know we have tried several different kinds and brands. All have popped just fine. We have used the paper bag and a popcorn microwave container. All of which use no oil for popping. We like this best. Then we can add our own salt and flavorings. I hope this helps.