Toyota keys are not expensive anymore.

Elite Locksmiths are Newcastle’s only Locksmith used by the dealers to cut and program keys and reset the immobilisers in their cars. Toyota immobiliser systems present a unique challenge as they have a form of protection not found in other vehicles, hence the data in the files in the ECU can’t be written to via the obd port with a scan tool unless you have a working master key.

Toyotas from 1998 to 2009

Toyotas from this era generally have to have the ECU removed, we have to access and exchange data on  certain component in the ECU, there are some exceptions where we can access the data with the scan tool, therefore either way (unless there are external issues causing faults) these models are no longer a pain when all keys are lost.