With the Polish zloty at a six-year high against the USD and Poland's economy skyrocketing in prosperity, leaving China in the dust (picrel), Poland isn't quite as affordable as I hoped. Nonetheless, wandering around Poland remains much cheaper than traveling through Middle America - with much better public transport and more lively, walkable city centers.
>Total spending for two weeks: 2383.6 PLN - $658 USD - $47 per day
>Lodging: 1402.4 PLN - $387 USD - $29.80 per day
>Food: 660.7 PLN - $182.50 USD - $13 per day
>Transport: 260.6 PLN - $72 USD - 70 km per day
>Beer: 35.6 PLN - $9.83 USD for nine 500 mL cans/bottles
>Misc: 24.3 PLN
Multivitamins are amazingly cheap here. Only $3.80 USD for 100 tablets, made in Germany. A 120 gram Camembert cheese roll can be had for about $1.20 USD. So good with the rustic yeasty buns. Like one anon was saying, you can buy low-grade kielbasy sausages for very cheap, $3 per kilo or less, but the decent kielbasy goes for $10 per kilo. Most supermarket offerings come in big packages, which makes it a real PITA if you only want to buy ingredients for a single meal.

I visited the bakery run by my distant relatives in Bialystok - we share the same last name. The ladies were curt as usual, and I didn't bother them with any personal questions. Too bad.

Here's a chart comparing the wealth per person in Poland and China. Look at how Poland has taken off in recent years, even as China has stagnated.