tire rack has exclusive distribution rights for miglia wheels within the united states, so it will be tough finding another dealer in the states with a selection like theirs(and afaik
they are discontinued). i just went through this trying to find another discontinued model of miglia wheel that i have
there are a few places in canada that stock selections of miglia wheels as big as the tire rack'*, but most of them won't ship into the u.*. due to tire rack'* exclusivity rights here. if you can find one that will, bear in mind that their pricing will probably be 20-50 dollars more per wheel than tire rack'* pricing (tire rack has the best miglia pricing in the world). plus you'll have to pay customs and international shipping to get them here, unless you have a friend in canada to do the purchase/shipping for you.
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, talk to bob, he'll help you out.
if you do find some for sale make sure it'* the right offset too