These places change (go out of business, change management, assortments or their www, whilst new ones sprout up), but the last I heard these outfits were shipping Polish-style specialities all over the USA. Not all are as pricey as Polana of Chicago:
alexandrapierogi.com
bobak.com
buffalofoods.com
buffalopierogi.com
cheemo.com
dudekfoods.com
filspolishdeli.com
JaneksFineFoods.com
kopytkomeatmarket.com
kowality.com
krakusmarket.com
milliespierogi.com
PolishHypermarket.com
polishpierogi.com
StanleysMarket.com
tastedeli.com
wardynski.com
jjdeliportjervisny.t35.com
alexandrapierogi.com
bobak.com
buffalofoods.com
buffalopierogi.com
cheemo.com
dudekfoods.com
filspolishdeli.com
JaneksFineFoods.com
kopytkomeatmarket.com
kowality.com
krakusmarket.com
milliespierogi.com
PolishHypermarket.com
polishpierogi.com
StanleysMarket.com
tastedeli.com
wardynski.com
jjdeliportjervisny.t35.com