30,000km is not quite a year's riding, so in itself is no big deal. As long as the bike has been properly serviced at the requisite intervals, I would have no worries about its condition.
My bike has done about 40,000km from new in 15 months. Mrs H's Bandit has done almost 80,000km in about three years.
The prejudice that exists about "high" mileages on bikes is something that astounds me -- where "high" in many people's minds is anything over 10,000km.
Quite frankly I'd be more likely to buy a properly serviced three-year-old bike with 60,000km on its clock than I would a 12-year-old bike that had done less than 10,000km.
"Standing on your mother's corpse you told me that you'd wait forever." [Bryan Adams: Summer of 69]
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