Budget at least 5k for WREB. Besides the exam, new instruments, pay the best assistant you can find. You might need to provide transportation and hotel for your patients. Actually you better do that, if they have their own transportation they might run off. If you are their transportation, they are not going anywhere. Get your whole family involve on this, driving patients, getting food for them, make sure they are comfortable, I even had friends came to watch them for me, talk to them, keeping them company so they don't get bore and decide they don't want to be my patient anymore. Of course you have to offer them $$$ too. That's how I spend my 5K.