No, not a mistake - I see it as supporting the development of the Sim and happily do so knowing I am helping it get there.

The simple answer is if you want to pay less and get the whole thing hang out and wait for it to be completed. I am under no illusions on what I am buying - I'm buying the development of the end result and for me it's fine but completely understand other people feeling different about it.

$70 - for a sim isn't high in my books.