you're given 2 master keys when you buy a car.... you lost BOTH?
(i have a 2000 camry, one of my master key doesn't look like the other. i saw my aunt's 09 camry master keys, they both look the same)
anyway, buy the key online: 1sttoyotaparts.com/oemcatalog
it's the cheapest OEM toyota retailer i've seen anywhere. very, very low markup. (it's an actual dealership in Washington)
get the key from them, it'll save you some money, then call every dealership in your area and ask them what it'll cost you to recreate a master key. honestly, from my experience, they don't have to reset anything, they just look for some key code that belongs to your car and can create a new key with that. i'm guessing the key cutting thing can be automated to reproduce keys without a blueprint or a spare.
anyway,
https://www.1sttoyotaparts.com/oempartscat.htmluse the contact form. looking for your own parts through the catalog is a pain. provide vin number. "smart key" is a plain key that has no buttons ($40). if you want the lock/unlock buttons, ask for the "keyless entry key" ($160). either one can be cut into a master, but they all MUST be programmed at the dealership, there is no way around this. i've already scoured the internet looking for a DIY method. there isn't any.
most dealerships do not charge to cut the key, but they all charge different labor fees for the programming. so call around.