It is a good channel, as is Science Channel, but bargain is the wrong word. A raping is more like it. $10/month extra for the channels that should be in the top 100 (Nat Geo and Science Channel) over the 200 package to get to the 250 is ridiculous. Dish has its channel structure flipped around in so many directions, it is truly all over the place (done so they can make the most $$$ obviously). If they were really the "Top" anything they would go by popularity. What exactly does "top" mean when it comes to Dish? If it went by popularity channels like Fox News would certainly be in the 100 tier.
I bit the bullet and switched to the 250 pack to get the rest of the HD channels (specifically the two you mention) from the 100 pack. I have never felt good about it. My cable provider now offers both in HD, along with everything else I get with Dish (except Voom the sinking ship) so I am going to be dropping Dish soon. I am still in the process of burning all my movies off from the external drive since that will be useless for viewing purposes when I send Dish my boxes back and cancel.
Nope, I never felt good, especially not like I was getting a bargain, for having to shell out so much extra for NatGeo and Science Channel.
I guess one man's raping is another man's bargain. Just like one man's junk is another man's treasure.