Good afternoon everyone. I was working on my Buy Miles & Points Page and found a few new offers. Always check the math to make sure that buying miles & points makes sense for you. Do not buy miles & points speculatively unless you have a use in mind. With that said, here are the 4 promos that are ending in November. First up, United Airlines is running a mystery offer with up to 70% bonus miles, depending on the number of United Airlines miles you purchase. Offer ends on November 20.