Not sure where to start here..
-Asking for money for electronics
-Throwing autistic kid in front of tablet instead of parenting
-Wants $200 for a high grade model when a kid won't know the difference vs a $70-100 one
If it does legitimately help your child(there's plenty of evidence to the contrary, autistic children become dependant on them and it can even worsen autism symptoms), there are charities and you can get it covered under DME if you have good insurance and a doctor supporting the need for it.
..then again, I hate pretty much all gofundme begging.