Hi sorry, although I've already discounted the total package of cards and shipping by about $8 in total for you given that you were looking at 12 cards.
I will still have to pay the shipping costs which comes to about $5.50 total for both envelopes. That means that you are getting 12 cards for approx $1.21 each (for example: $20 minus $5.50 = $14.50 divided by12 cards = $1.21 each). I believe this is a pretty good deal and don't think you will find these cards for cheaper, especially since two of the cards you've requested are my best sellers (i.e. penguins & biking in paris).
I hope you will reconsider as I would still need to offer you $20 for 10 cards as well.