The PT-180 is the entry point in the PT line-up. Notwithstanding, it is certainly no slouch, but rather, a very capable, beefy compact utility tractor (CUT).
You mentioned that you were looking for a lawn tractor. The 180 will cut your lawn, and it will do a wonderful job. But as others on this Forum have observed time and again, if one is looking for a primary lawn maintenance unit, the PT maybe should not be your first choice. The value in the 180 is the line-up of ground engaging implements and a true FEL, unmatched by anything in its price range. IMHO, it is the spectrum of work capabilities that the 180 offers that should steer one to consider its purchase. There are a whole host of very well built LTs (lawn tractors) and GTs (garden tractors) which can mow beautifully and plow snow which I would consider if those were my primay or sole goals (and those units would presumably have local dealer support, which as you are probably aware, PT does not offer).
The 180 uses a quick attach system for its front-mounted implements. Unlike its bigger siblings, the quick attach on the 180 is manually operated, not hydraulic. Since all the implements are front-mounted in the PT series, they do not make for user convenience in some activities such as row crops, where you would likely be driving in reverse a good deal of the time. However, the PT shines in other arenas.
In summary, my $0.02 would suggest candid assesment of your current and forseeable future needs, and let that assessment prioritize your LT, GT or CUT selection.