AwardWallet: Truth In Advertising?

I got an email from AwardWallet, a service that helps you track your loyalty programs. I logged in for the first time in a while, and noticed that my United mileage expiration date was missing, and in its place a “please upgrade” link. I clicked th elink and discovered that AwardWallet would like me (was coercing me) to upgrade to a paid service. However, it seemed that they were going to let me decide how much to pay for it.

At first I tried $0.01, but was informed that I have to use ‘a number’. Hmmm. I thought that was a number. So I tried an integer, which is what they meant, I think. But when I typed $1, I got the following:

AwardWallet Upgrade, originally uploaded by Stowe Boyd.

So, I am free to choose to pay whatever I want, so they say. But the system forces me to pay at least $5. Isn’t that lying?