Yea, I think I'm going to have to start buying boxes. My items are usually only 6-8 oz, and I'd feel like I'm ripping someone off if I had to charge like $6.00 to send something to California when first class it only costs $2.75. Thanks for the input everyone!
Do you take insurance? I find that for me, first class with insurance runs about $3.63, going from East Coast to West Coast, and probably for under $100. If the item is too heavy for 1st class, then I tell them to suck it up and pay for priority. Or I jack the price up six bucks and say free shipping.
Finished reading all the comments. I HATE USPS WITH A PASSION! They suck. They are the worst, and I rant and rant all the time. That said, where I live, we rank at the bottom of US Post Offices. I can't tell you the number of horror stories I have had. I sent one priority mail at xmas, and it just got stuck at the sorting facility. No one could find it. Until I opened a case when enough time went by. Magically, they found it that day. My mail carrier carries his mail under his arm. In the summer, with 100 degrees and humidity, my magazines have to be tossed in the garbage. When I complained to the manager, he said he was following PO regulations. He is allowed to get his arm pit sweat all over my mail. (I have pictures.) He wouldn't answer me if he would read it with someone else's bodily fluids on it. And he ended the conversation when I told him I was going to pee on the mail and leave it out for the carrier. (Hey, bodily fluids are bodily fluids .. doubt he would want to touch it if I spit on it.)
Yeah. I hate USPS, and they probably have it out for me for all my complaining. I bet they do it now just to get me. (OH, 5 years ago, took the kids for passports. 4 kids. 3 passports arrive, one doesn't. No one knows where it is. They end up overnighting me the passport. The first batch arrived in Jan. The missing passport showed up at my door IN JULY! WHERE WAS IT FOR 6 MONTHS

No one seems to know. Yes, I really, really hate USPS.)