IPORT and insurance

The IPORT distributor just called. We have to meet a separate deductible on medical equiptment, they say, so this first box is going to cost 75 dollars. After that, boxes will cost $15.60, which they claim is ten percent. I was under the impression that a box was way cheaper than $156. I mean, 156 per month would make the cost of porting full time $1,872. Of course, I'm only planning to port part time, but still!