Why is Amazon charging me £2 per click on ads

So I’m a fbm, made a listing couple days ago and currently have the buy box so my ads got approved.

I go to check today how it’s doing and it’s got 140 impressions and only 2 clicks. They only charge me per click and so far I owe £4 for those 2 clicks.

Why the hell is it so expensive my TikTok ads I get like 20 clicks and pay like £4 for those.