This one costs $4.99, but it's a Fun Factory. 
How Much Does It Cost To Build A Factory?
Downpayment on commercial real estate may cost $25,000 thousand down.. Howeva there are no set rules in life if you know better. So if you know real estate investing better you can write a note to the seller and bargain your way with a no money down scenario, along with everything else in your factory business plan you have organized for yourself.
It depends on how big it is, and whats it's for.
A lot of money $$