As you talk about warranties, I presume a dealer is selling it. Therefore the service its been given and even the MOT and service history are probably not worth relying on at all!
Would need to be in very good condition to warrant that price. If it is, I recon good condition F1's are great value for money.
As said, 108k is low mileage, but you can't get over the fact its a 15 year old car.
Generally Freelanders are very good on reliability, mine's over 20 years old (with the earlier Rover diesel engine) and is boringly reliable.
What I would say is that on 108k it will probably be needing a clutch shortly if it hasn't had 1 yet - not cheap. Also check to make sure you are perfectly happy with the operation of the clutch because if the hydraulics are going, then its a box off job and you may as well replace the clutch. Check it still has its prop shaft installed and check the 4 tyres are the same make and model. When buying an F1, always budget on needing a recon VCU (about £300).
FYI....
https://www.landyzone.co.uk/land-rover/tests-new-freelander-1-owners-should-do-on-their-car.312863/
Warranties (here at least) are generally just insurance policies that dealers take out on the car - so you could arrange that yourself. Mind you I'm not sure if the insurance companies like selling them on 15 year old cars.