I've moved thispost to a more suitable area as it has nothing to do with Freesat.
OK, the first thing is that strictly speaking the cards aren't yours, they're $ly's and their Terms & Conditions forbid you to sell them on. In fact Ebay will take down any post selling cards...
The second card is a subscription card that hasn't yet received a signal to take off the subscription channel entitlement. Leave it in a $ly box and it will, sooner or late, be downgraded. Then it will be effectively the same as the FTV (free to view) cards sold by $ly as "Freesat from $ly". The channels that you mentioned on the first card are all FTA (free to air) and can be seen without a card, exactly as you say, so this doen't tell me anything about it. There are a few channels that need an FTV card - $ly 3, Fiver/+1 and Five USA/+! spring to mind - so see if either or both cards open them up.
Not all ex-subscription cards revert to FTV status. I have about 4 cards that, when inserted into a box on one of the above chanels, say "This is the incorrect card for this box". These appear to have been permanently locked to a box for some reason and have no value.
All cards will set the region of whichever box they are inserted into. This means that you get the correct BBC1, BBC2 and ITV1 at positions 101, 102 and 103.
$ly currently sell an FTV card for £20 I think.
Incidentally the current generation of card is white, the previous cards which are blue have no value at all.