If I am reading this right, you are looking for a rear finish mower (RFM). They work well, but they are a little awkward if you are thinking of mowing a smaller lawn. usually 3 point mounted, runs on casters to maintain a consistent height, and is powered off the PTO. I think they normally run between $1k and $4K depending on size and build quality. I have a 60" Land Pride unit I got new for $1500 that I run on my Kubota B2620. I can get most of the lawn really easy, but it's a small tractor and mower.