Well, that and the fact that the USPS is ludicrously cheap for what you get -- check out the comparison chart from earlier this year at Postal Sanity (http://postalsanity.com/2010/07/u-s-postal-rates-excel-in-international-comparison/).
That's... fascinating. Lulu's been around for years; it's a self-publishing and print-on-demand company. Nothing wrong with their website that I've ever heard anyone complain about (at least as far as security goes).
If you can't learn to do it well, learn to enjoy doing it badly.