Coin opp laundry issue

[Nicholas Weckstein]

I have a coin opp washer and dryer in rental. My tenant is telling me that the dryer is taking to much money to dry the clothes, around 5$ and the washer is leaving “white stuff” on the clothes. Looking to see if it’s worth trying to fix or to just replace. Obviously I need to have some one take a look at it. Just trying to see if anyone with any experience with these units can offer some input Also where to buy and how much would they run me. I’ve seen a huge range of prices when doing a quick look online.