Let me explain a couple things about my comment.
While I've worked on too many of these bikes to even recall, I think I can safely say (like the farmers insurance commercial) I know a few things, cause I've seen a few things etc.
These bikes, when serviced correctly, and maintained correctly, will often run past 300,000 miles IF they have been serviced and maintained correctly.
The problem with these bikes, is that they are so reliable that folks tend to treat them like a VW Micro Bus, and just run them into the ground, or they sit in garages, by the snow birds who own them for years at a time, and die a slow and painful death.
These bikes are pretty easy to maintain if folks are handy with some basic tools and knowledge, however, where I see a lot of damage done, is when folks start thinking themselves as CERTIFIED YOUTUBE MECHANICS, and are blindly following videos of what others have done etc.
There are a lot of videos out there, and to be honest, I've not seen one that shows the correct, or complete procedure for flushing/bleed either the brake or clutch systems correctly.
Just because someone takes their phone and makes of video of what "they" are doing at the moment, does not make it correct.
Another problem is folks interpret the service manual to suit their needs etc. "it says I only need to flush the fluid every 2 years or XX amount of mileage"," I only ride it 800 miles a years, so I don't have to do anything several years

Most of the damage found on these bikes were owner induced, meaning vampire clips in the wire harness, ghetto wiring jobs, using pliers instead of wrenches, using grease on the splines instead of paste, using energy conserving automobile oil, then wondering why the clutch slips etc.
Or my favorite "The brake and clutch system has never been open or bled, so there can't be air in it"

My current 07 has 100,000 miles on it, and I would ride it to Maine tomorrow with even giving it a thought. However, I would not trust one of the NEW in crate 2016 police bikes being sold right now for $9,999 dollars out the door, without completely going through it and probably having to replace both the SMC and the CSC due to damage from sitting in their crates 5 years in some hot, and humid warehouse somewhere. (and yes, I have had to replace a few of these units on these new bikes just purchased already).
Some of the stuff is easy to keep working, oil changes, coolant flushes, brake and clutch flushing, however folks tend not to do it, now what was just a leaking hose clamp on the T-stat housing, just turned into a $100 dollar T-stat housing, because ignoring it for so long caused pitting and damage.
Not flushing the brake fluid yearly (even though the service manual says every two years) will corrode the SMC and quickly start damaging pads and calipers, at the very least, and risk tossing the rider off the bike when the brakes lock up without warning.
Bikes that sit for even a year in the garage, are often found with NO clutch pressure at all at the beginning of the riding season, and must be flushed/bled to get the lever back again.
And this is a huge FLAG that even though new fluid got the lever working again, you must think about what the Clutch slave cylinder must look like

If the owner used the wrong brake pads, or installed them wrong, or didn't maintain the system, pads can vanish in just a few hundred miles, damaging rotors/calipers etc.
A person can't count on dealerships to work on a bike of that vintage, as they are normally told, "its too old, we refuse to work on them" etc.
So like another member pointed out, IF you like working on bikes, take pride in your service, and repair this used bike your looking at, it could/may last you 200,000 miles.
If your hoping to just USE the bike and get some enjoyment out of it before purchasing a BETTER one, you could be diving into a huge money pit and a lot of frustration and regret.
Money would be better spent on a newer model 07 and up for just a little more money. Then you wouldn't find out the hard way, that all the accessories and statements such as IT NEEDS NOTHING, were leading you down the wrong road.
Of course, I've worked on several 03 models, that are still on the road, and have over 100,000 miles on them, maybe you'd get lucky and find a bike that I whispered

The deal breaker for most on a bike that is 18 years old, besides what I've pointed out, is the ECU and the Alternator (both expensive to fix).
Shop around a little more, and check out SEVERAL ones before you pick one. Its a buyers market right now.