Another good offer that might be interesting for you, Yellow (maybe for someone else?):
Someone here in Latvia is selling used Carcassonne set:
1. Base game with River I (LV edition),
2. Traders & Builders,
3. The Princess and The Dragon,
4. Cult, Siege and Creativity.
If my calculations are correct, there are 150 tiles in total. Price - 25 EUR. Expansions were played only a couple of times, mainly base game was played. Though seller said this is kind of auction, I don't believe the price will grow dramatically (Carcassonne still is not SO popular here).