Is it worth paying for a subscription? Which one?

I’m also saving up for something else but this could help me just as much.

It depends on how much you can afford per month, really. If you can afford the yearly payment, that's the cheapest option over time, but the option to have three months to pay is really nice too. I personally do the 9$/month since it's what I know I can afford, and I want to support the site as much as possible. ^^;

I'm thinking about doing the yearly one since it's cheapest and it'll give me time to save up in between payments.

I paid for the yearly subscription. It's a lot easier and you have a lot less to worry about. It's really not that bad if you have a job, etc.

I'd just do what you can afford.