I just placed an order for a key for my Toyota roof rack on Lost A Key
. They seem to have every key number for the roof racks, just search for "Toyota roof rack" and then whatever number your key is : example "Toyota roof rack 23" brought me to the one I needed. They are out of Illinois, and shipping to me in PA was $.80 so it should be that bad to anywhere. My grand total with shipping was $11 and some change.
If you need a roof rack key, I would check this out. I'll post how the key works when it gets here.