I have had so many issues since the first of the year. My PO will not take any boxes that do not lay completely flat. If there is any sort of small bulge in the box they will not accept it. Even though it is COMPLETELY closed on its own. I didn't even use any tape. They have really buckled down on the flat rate envelopes too. They are suppose to lay flat. They are an envelope not a package, so I have been told. I have sold a bunch of stuff and am in there on a regular basis. But I have gotten so much flack since Christmas it is ridiculous. On the envelopes I am allowed to put 2 very small pieces of tape on the top corners to hold down the opening but they do not accept anything if you tape down the flap. No tape is to be used on the box at all. So many rules. After the new year the prices have went up and now you have to ship less in each package.