Back in the day, I needed less than their minimum tier offered, and sent support an e-mail, because I heard they would give you an exception if you asked.

They were able to give me a cheaper plan with a smaller capacity. A little later, my storage tier was less than the amount they were offering for free, and they stopped billing me.

I don't know if they're still willing to do that, but that gesture earned a lot of goodwill from me.