There is an argument to be made that it's good training, like coding kata's just with the end to end.

If you're looking to make a living off of it, the training argument only works if you then go on to used the trained skills though.

In this instance, if the numbers provided are to be believed they made bank.

i'm seeing a six figure sale on a five figure investment, among others.

Though i suspect, like is usually it, that the provided cost numbers are much higher in reality when factoring in time and opportunity cost etc.