In my 2 trips to Turkey in the past year I had 2 full day Uzay hunting excursions at local flea markets and antique collectibles. All I turned up with a slightly beater tie fighter and a stormtrooper blaster.
Its better than nothing, but keep in mind I went to 20+ vendors, so the yield is pretty low.
Everyone I spoke were fully aware of the value of Uzay and if they once had any, they were sold years ago. Your best bet is to ask friends if they had childhood collections. Good luck!