The smaller tiers look rather costly, but if the prices included US shipping, I'd say they're justified. Otherwise, no - too high, especially when you factor in the much-lower price of the 1st Edition decks - in every single tier, the 2nd Edition is at least $3 more than the 1st Edition, while the 1st Edition normally would be harder to obtain.
On the plus side, your larger tiers are more affordable, with prices dropping off steeply.
I'd suggest that you bring down the price of the 2nd Edition decks, and slightly raise the price of the 1st Editions, perhaps in the range of $8 or $9. As it stands now, that first tier (not counting early bird pricing) is more than double the cost of the 1st Edition decks - narrow that gap a bit. You can afford to raise the 1st Ed. price a bit - right now, your site is charging $10 for them, Art of Play is charging $12... Bringing the price up a bit but still below retail will be an added draw to backers AND you can use the extra cash to either take more profit or lower the price of the 2nd Ed. to sweeten that appeal.