There are tons of this stuff in Poland. You will find just about any brand of desired quality and price ranging from basic to professional. A good idea to start with is www.ceneo.pl which will help you to shop online and compare prices.
Recommended, quality cookware brands in Poland are: Bosch, Zelmer and Braun. They aren't the cheapest but they are worth their price.
Very nice shops online with good prices and great customer service:
www.neo24.pl, www.morele.net, www.x-kom.pl, www.oleole.pl
A few phrases to look after:
garnek do ryżu - rice cooker,
szybkowar - pressure cooker,
blender ręczny - hand blender,
blender stojący - stationary blender,
młynek - grinder
Most cheap cookware is like 250-300 watts. But it isn't really a problem to buy 600-700W blender or even a 1000W one. I personally use Braun and Zelmer and they are exactly like that so you can grind anything you like.