Are you sure you're reading it right? In Poland prices have been cut on all models, I think. Maybe it's because polish Apple Store was much more expansive than any other I've seen in Europe to start with.
I can confirm this: prices went up. Base 13" is now 3000 CZK more (~110 EUR) but got additional 4GB RAM and 200 MHz CPU speed, top 15" is now cost 5000 CZK more (~180 EUR) an got just 200 MHz speed bump.