What is the intended purpose of the tiller?
Vegetable garden?
Flower beds?
Lawn renovation?
Enjoying springtime? (that is my tilling duty purpose!

)
A $3k purchase is takes up a lot of storage space, if it is used 15 minutes a year.
But, then a dragster costs more and is used less time!
If it is to get grass to grow behind the house, I would be buying hay, thinly covering the area every couple months until the grass looks better than a golf course.