Amazon offers the Nesco Snackmaster Pro Food Dehydrator, model no. FD-75PR, for $55.99 with free shipping. That's the lowest total price we could find by $4. It includes 5 trays, jerkey spices, and recipes and purports to dehydrate food in hours instead of days.
Orders placed on Amazon via 2-day shipping by today, December 22, will arrive in time for Christmas. (This option is free for Prime members but $19.21 for everyone else.)