So great to read a thread about children taking piano lessons!
We raised our, now grown, children with music lessons of many types, and they still thank us for it.
We inherited two Steinway Grands when they were young, and our entire family has enjoyed playing them for years.
As many here have suggested, if you do not currently have a piano in your home, definitely rent one, and see how it goes. You will find many reasonable opportunities to buy in the future, if it seems appropriate.