To be fair, we haven't actually seen any evidence that Isabelle no longer believes in Santa Emotionally and educationally she seems behind her peers so who knowsWhen she said about sending isabelles advent to the elves..
They are certainly racking up some miles in the DPD van. That, along with the crap conversion, means they won't get anything near their money back when they sell it. The overloading is probably putting stress on the suspension too.