It was built in to my 921 and my 622, so it cost nothing. For those of us who live in between two major TV markets and have no other way to receive programming from the other DBA, they ought to give it away.
The built-in ones still cost something... they didn't give those away, it was factored into the price.
As for being "owed" just because you have no other way to receive programming... Actually, that's the scenario where they have zero incentive to give it away. IF you can't get it any other way, then of course you have to pay to get it.
In a perfect world, I wish they had stuck to the built-in ones sometimes... but then, these external ones have a chance of being improved/upgraded as technology evolves too and IF the OTA tuner fails, you can replace it without having to replace the entire receiver.