Rates for priority mail And probably for first class mail as well. I may have to raise my shipping prices, which include more than just the shipping price. I also put in for the cost of tape, bubble mailers, shipping software and promotional materials. Why don't I just do exact shipping? Because I know that if I'm losing 50 cents on every package, and I mail out say, 25 a month...yea, I could have had two good dinners out with that cash.