[Per Guidelines: Keep it Relevant and Appropriate]. You would, of course, have to do a little bit of math but, it's not unlimited if they are limiting how much data you could transfer... they might say they aren't limiting the AMOUNT of data but merely the SPEED but if you use a simple formula (amount = speed x time) it becomes clear that they have in fact limited the amount of data in a roundabout way. You can only download a certain amount of data at that speed in the span of a month. {keep it courteous}