Okay I just got a reply:
Hello, Mr. Diomede,
Please do not worry. You have ordered the last item from the old stock at old price.
In case you'll be interested in additional items, they will be at new price.
Do not hesitate to contact us should any questions appear.
Best regards,
Customers Support @ MaxPetShop
So basically they were responding to my original question as to how many they still had in stock.
So the new price is 39.99 plus shipping.
So in short: If you've already ordered from them and had the funds withdrawn from your paypal, you will get the item. Hopefully