A 2014 DSDP 40 footer for 250K? Don't think so. Maybe a Ventana. In any case, most of the costs you're inquiring about depend upon the state you register the mh in. In our case, the plates were over 1800, taxes were over 22K, insurance about 1200, ERS is 120, and the extended warranty would have been about 4800 for 7 years (685/yr).
Hope this helps