I think the information you're working with might be out of date, I don't see the words "starting at" anywhere. Glacier egress pricing is $0.01 per GB and $0.05 per 1,000 requests. That's for standard retrievals. Not so complicated.

Before Feb 2017, it did work with the peak hourly request fees. Those were well documented. Apparently peak transfer rates were "confusing". I didn't think so, after all, that's similar to how I pay for internet access at home (I pay based on capacity, not based on bytes transferred).