I'm asking about this specific question. If you check the revisions, you'll see that OP's question was a "shopping" question, and did not give any specifics about what they needed other than "cheap". After it was closed, a different user came by and added a lot of extra text and questions which were not at all implied in the original post.
I think that the edit transforms the question from off-topic to too broad, and in its current form should remain closed.
However, I think one of the new questions, "What is the difference between student and artist quality paints", is a good question for this site. I was considering editing the post again to remove all the "fluff" the editor had introduced and focus on that one question, but that still wasn't OP's question. We might even be able to handle "some tips on painting without going broke" (like, how to reuse canvases), but again - not what OP asked.
My question: Assuming OP doesn't return to give feedback, is it okay to edit a post like this - to introduce a question that is related, but not what OP asked? Or, is it better to leave it closed and post a new question?