The TITO device is worth it. Some are programmed to give credits by pushing the service button. It saves a lot of wear and tear on your validator. Also since the tickets can be used over and over on these TITO systems, you can have like a $3000 ticket printed so you can use it to add a LOT of credits at once. They are easy to install and relatively easy to configure your machine for their use. They range in price from $35 up to $90 depending on how many features you want.