I spent a lot of money on that book
I worked really hard to earn that money
I saved up my allowance money from a couple of months, that's how I could afford that.
I asked Mark for some money and now I'm in debt to him
I went to a cash point to take some money out
I put some money in my bank account last week
I bought some milk and I got a discount
You know I can't afford such an expensive car!!!