Ok, cool. Ahrefs is about $100 per month for the lowest tier (which is what I use and think is completely all most individual bloggers would need). Shine Ranker is new and only offers a annual plan right now around $2,000+. So Shine Ranker is cheaper when you break it down monthly but until they offer a monthly plan, I suggest Ahrefs. Lowfruits.io is another good alternative that is cheaper (it's based on credits so I'm not sure how much it costs).