Er 70,000 km is about 40,000 miles, not the other way round!!!! These bikes are good for loads of distance providing they are looked after like oild changes and stuff. So look for a full service history, that is more important than the miles/kms covered.
I have had 3 of these and I too mainly use mine for the work and back trip and mine really adds fun to my commute. I have had various scooters but this is FUN......

Enjoy!!!

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(Now sold on, sob) 2011 Blue XT660X with gold wheels, was 26,500 km.
Engine mods: K&N Stage 1 filter, DNA Stage 2 filter, snorkel removed, Kev fuel mod fitted.
Plus: smoked Puig screen, Yam aluminium sump guard, Yamaha / Acerbis handguards, Givi Trekker aluminium side cases, Leo Vince X3 cans plus Kev front fork mod and Fender Xtender. Just fitted Michelin Road Pilot 3 tyres.

SOLD the XTX for a Super Ten 1200. And just bought a Raptor 700 so staying on here for some tips....