Man...I remember when .03 btc difference (1.18 to 1.21) wasn't that big a deal.  But now it's $500-$600.  The old ratios for buying these Casascius and any coins for that matter, are changing fast.  I offered 1.25 btc for a Cas just the other day.  Thank god the seller didn't accept.  That is way too much now.