Not the elastic nature, more that it takes longer than it should to understand what the drivers are. If everything is related to memory and memory only goes up in 32MB chunks, have a slider/radio/dropdown/whatever that moves memory and related resources simultaneously, with a per-hour and monthly charge that's auto-updated.

I think it's important to note that the page is about pricing, but 99% of the info isn't a price. Above the fold there's only one price, which you have to use in calculating the actual value yourself. Way, way down are the examples, but they might or might not represent what a customer's workload will look like, so they still don't really have what they came to the page for. Getting the customer their own price, super-fast, (assuming it's a good one) is the path to showing why you guys are so fantastic.