I'd have probably grabbed it if it gave RR spells as well, probably 1 every 48 hours. I thought about one a week, and 2 chapters per year, need 32 to just to update that building, not to mention it is a fairly big building with far less than optimal population and culture. You can't store it if you want that space for something else, say for an event, so you are using up and creating inflexible space in that you can't sell it and get it back and you can't store it.
I think we need storage. I spend money on my live game and I have no flexibility there any more in terms of the buildings I want to keep. It isn't like an event comes along and you can just store a few buildings to make space and then pull them out again. You have to sell them. You can't put them away to rearrange your city. You can't store them and pull them out to try and create a theme city.
Another game I played did not have size increase for buildings as the game developed and you ended up with an extreme number of 1x1, 2x2, and 3x3 buildings, and the 3x3 buildings always had bad average values, so the game was driven to the 1x1 buildings. The creatively as the game evolved was simply destroyed because when you had a map with 1600 1x1 squares to move/place/store, it was too time consuming. Up to about 900 squares lots of players would create interesting designs and pull out and used a variety of buildings collected over time.
So here building sizes have increased so a 6x4 manufacturer is only one building to move compared to 24 in the other, and the 6x4 has the best values. So this is a very good thing about this game.
At this point I think players that spend money on every event are tapped out on space for new event buildings, and tapped out on space for events because of want to keep buildings that have time and money invested in them that have good values.
If it gave 1 royal restoration spell per day or 1 EE spell +1 RR spell per 48h, then i would buy it for 200%.
With only 1 EE spell and statistics weaker than Mauriel in elementals, it's not worth my 1 daily payoff.
For 40 zloty (around 10 dollars) i can make sure that i will get 1 strong evolution building up to level 10 if needed, when the time comes (as I made with fire phoenix before i realised that there will be 1 additional artifact 7 days after and 2 additional 3 months after in fellowship adventures)