A few things I've found:
Some retailers don't show USPS shipping, so a quick phone call might sort it out for you too. There are a few ways if you are a company on the receiving end as well I think....
For example, I just shipped up a bunch of handheld radios by USPS and no issues whatosever. It even arrived at my company's office instead of my PO box which I normally use.
I spoke with the shipper of my radios and apparently it was out in the USPS category of "books" or "media samples", and this has an even cheaper rate than most packages. Delivery time for being in Early January was pretty good too.