I have decided to get a divorce. (Don't ask me why) Can I know how to go about doing that? How much will it cost?

Not in favor of divorces, but you know if it's best for your situation. You need to file a writ for divorce, statement of claim and Statement of particulars in the family justice courts. It costs generally around S$3-4k. But to inform you, if you've kids, this might be a bit more tedious, so just take safe steps.