How do I buy it?

Hitch ‘N Plow® is available on Amazon. Just click on the link for the adapter. You will also need a winch, category 1 farm implement (which you could purchase from Amazon or your local Tractor Supply), and a battery jumper box to be able to power the winch from the rear of the truck/SUV. Note: these are Amazon Associate links and I earn commissions from qualifying purchases. 

UPDATE: Behlen is no longer offering “Hitch ‘N PLow” on Amazon but it is available via the Global Industrial site: https://www.globalindustrial.com/p/material-handling/tractor-attachments-implements/3-point-landscaping-attachment/hitch-n-plow-non-pto-driven-3-point-tractor-implement