The only problem is that you messed up Fluttershy a little bit. She's supposed to be taller and thinner. You did that slightly, but she's supposed to be a lot taller. When she was lying down, she was almost as tall as Rainbow Dash, thus making her about a head taller than her.
She commissions them for $35 per filly. However, when commission slots open they go within the first second. I would watch her journal if you really want to get these from her, it might be quite a few months before she is ready for another round.
This is just more proof that the stuff the fans spend time working on reaches levels of awesome the official merchandise doesn't even begin to scratch the surface of. The official figures, and even the stuff that has been released FOR the bronies doesn't even come close to this. So Awesome!
It's due to large scale production costs and profit. Companies aim to set a price that is feasible for the majority of the public so they can guarantee a higher success of profit and less chance of loss if the product does poorly. Not every child out there has $35-$100 for each figure. We are just lucky that there are some artists/fans out there dedicated enough to create these accurate figures so we might have a chance of owning one.