Can I ask why you bought in?
You said you go purely on stats and nothing else, so what made you invest in this player? Especially without ever seeing him play.
I didn't invest at the time because I wanted to be sure he was ready to come back and play but if I did, I would have seen a 20% increase in price. This surely proves my point mate haha. There are so many factors in this FI world that can cause a price increase, not only PB and MB.