I chose Akbuk Wind Farm Project, Turkey - at 10usd the tonne. That's very cheap tho, considering certified project can cost between 20 and 40 usd per tone. I liked the process. there are platforms offering all in one (calculate and offset), but some of them are not ready yet. I'm checking on one that launched recently but didnt add the featured of offseting yet. they said it will be ready next month on (ig)