I go to USPS site, bring up their calculating postage site, put in the zip code for the area I am shipping, I have a pair of scales, you put the weight in on the calculating chart and it will bring you to options of sending and I just use the cheapest means to send, media is just books, papers, cd's and dvd's that 's how I do it, if you want to check it out and let me know,I will weigh them for you and you can check the price to see if we agree