Are you looking to make an exact replica or will you accept substitutes? Because if you're going 100% original, you'll probably find that all the expensive parts are the ones still missing.
http://www.beardednerd.se/completing-lego-cafe-corner-10182/
I mentioned some useful changes in here. You don't need the window pieces, the 2x10 brick or the dark blue half arches, for example.
At some point I need to do a stock take of the various arbitrary sets I've purchased to pick up odd uncommon parts for a Cafe Corner build, I wonder how far off I am.