More than $100K to replicate an R5 car, and a full WRC spec car would have been about 7 or 8x that, even back then.
M-Sport needs to start looking for another top crew, since they are losing Ogier/Ingrassia at the end of this year.
(Wilson probably should have tried to retain Tanak's pilot services, although I am sure he did not have the budget to match the multi-million$$ TOYota offered him to drive their Yaris
)