I have no idea of what you mean !?! .. I'm level 67 and only spend around 20£ in the beginning of the game and have plenty of buildings I got at events or via trade office.
Now .. I did save up for a gempit, and then focused getting new pit's - without using any gems for anything but that - which gave me a possibility to get some endless mines etc. If you focus a little on production and getting some trades you can get most things.
And regarding the flash stop they already have released a .. I think they call it a small client - a long time ago, so they are working on that :-).