The pricelevel in Sweden, as well as the rest of Scandinavia is high. Especially alcoholic drinks and smokeware have enormous taxes and the prices are skyhigh. However, also average groceries have a price that is almost double the prices on mainland Europe. Reckon with this fact in your budget if you go there.
Potential danger in Sweden is drinking too much.
Babars in Orebro is a great place to catch the locals.