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Same problem here. It looks like the market has changed but the limit for the building has not (0 instead of 1).

http://prntscr.com/q0g6gp

Day 1
Ali baba and the forty thieves
Oil lamp
Flying carpet
Ring

Day 2
Dark high priest
Signpost
Keys

How much population does the water castle hold on each level?

I just hope it won't get to live version like this:

https://image.prntscr.com/image/5Q0sW0tcRqKkrqgQ02Ci5Q.png