If you don't finish a Udacity nanodegree on time you lose access to the material and you have to pay again. It's certainly pay per month.
no its not. You have option to pay mothly with affirm but I don't think thats what u r referring to
It used to be part by the month. I took the data science nano degree and I finished a lot of it in a month and a half or so. The course wasn't complete and I felt like I couldn't do the reinforcement learning section based on the class so I dropped it.
It was a great deal then.
More like pay per term with most nanodegrees being 2 terms if you stay on pace. They used to have a monthly optio, which was nice if you worked fast. But now the only monthlyish option is the payment plan for a term loan.