New van OR engine for 2015 Kia Sedona

Family needs an engine replaced in their 2015 Kia Sedona, or a new van. We are looking for someone(s) to help with this need so the family can attend the many various dr. appointments, for the children, for which they travel a long distance. Family has priced engines from $2000 (used) -$5000 (new). Plus, looking at cost of labor.