As a non-native English speaker, I use Grammarly's free tier daily. It is invaluable to help me catch common mistakes, as well as to get a better understanding of the language through the explanations it provides. I will need to write even more English in the next few months, so it seemed like a good idea to get the Premium subscription. Unfortunately, Grammarly's pricing ($144 for the year) is prohibitive when converted to Brazilian Reais. And even if I am capable of making that payment now, I would rather avoid becoming dependent on something that is so expensive for me. So, what are some affordable alternatives to Grammarly's Premium subscription?

Just to be clear, I am aware that it is not ideal to rely too much on that kind of tool. Rest assured that my domain of English is enough that I am entirely capable of taking the suggestions as extra help and not as a crutch.