Banks wouldnt but it was opened up in 2009 . I was looking into this ïnvestment as well. The return is guaranteed by the atm service provider company who cover it for damage faults etc. 

This is what I was told  : All placement, insurance, maintenance, software upgrades and payment processing are done on your behalf by atm company, an experienced ATM deployer, at their expense. There are zero running costs for the life of the agreements (8-10 years). The machines are installed Australia wide, but are concentrated in Vic, NSW and Qld and the atm deployer pride themselves on finding the very best locations for ATMs. This is a no fuss investment .

With the agreement there is a minimum monthly payment per ATM. While you cannot earn less than this figure, if your machines are high performers, you will share in the upside. You are paid your minimum monthly return or $.30 per transaction, whichever is higher.   

So you get paid regardless of transactions a minimum of 20% . They way to get court out here is if the deployer goes bust or the government decide to abolish atm fees . What are the chances of that and can you trust what you are being told ? Pretty hard to know for sure if it is all trustworthy it would seem like a good investment with a 10 year written return Guarantee and a buyback at the end of the term of 10% of the original purchase price by the deployer .  Then you need to look at who is the deployer that will manage the servicing and your payments on the atms . 

There are some risks with this and it all rides with your ATM deployers profitability and the longevity of fee for convenience atms and government policy in relation to atm fees..