Wendol, I have an L4240 just like you describe but with 778 hrs now. What your looking at will probably be in the range of $18,000-$19,500. The price of the ..40 series tractors have actually gone up in the last couple of years. I keep an eye out for them and when they are listed on CL they usually are gone pretty quick.
When I bought mine 2 years ago I looked for about 6 months. Found one North of me, but I hesitated too long. The day I called the dealership to tell them I was coming up, he told the he just sold it. Found one a month later in Jackson, TN. Bought it based on the pictures the dealer sent, negotiated on price, and had an independent guy haul it to me. I never went to actually see it.
After talking to the salesman, getting the previous owner's phone number and talking to him about service and reason for selling I felt comfortable with it. I also asked the salesman to take picture of any thing that would make a very particular wife ask, "Why'd you buy this?".
They did good by me. Byrd Implement in Jackson, TN.!
You will like the tractor in my opinion. Nice seat with armrest, handle on right fender, adjustable links, features like hydro dual speed (where you can move a lever on the left side of the steering wheel to go from fast to slow with the flick of a switch). auto throttle advance lever, stall guard, and a bunch more!