First, check if there are moped dealers
in your area. If yes, you're ok (though you can still do
step 2 if you want). If not, proceed to 2.
Now, check the motorcycle stores in your state. Plenty, right ?
Call a few and ask them whether they carry mopeds/scooters.
If they don't, ask when they are planning to start doing so.
My theory is, once the dealers see that there's
interest, it will get them thinking - and perhaps
adding little bikes to their inventory.
Have fun and let me know how it goes!