I think we ended up in the ~$3,500/person range, but we took the lazy way out. It could be done for much cheaper.
Croatia was really beautiful and they are really pushing to become tourist attractions. The people were very friendly and the exchange rate was incredible. Croatia and Slovenia were my favorites for sure. Not as much to see, but they were laid back.
That goat is the mascot of Koper and his name is "Big Goat" he was a HUGE dude. I'm not a little guy and he dwarfed me.
Monaco was ok. It would be an awesome little country, but there is something about it that didn't sit right with me. A weird analogy: it felt like Beverly Hills. You hear about how awesome it is all the time (rich and fancy, etc...), it really is pretty cool when you get there, but you're left feeling like "Ok, it's cool, but not all that cool." Still very neat, just not as cool as it thinks it is.