Assume a market segment has the following Buying Criteria:

Age, $2$ years$-$importance: $47\%$

Price, $$20\mathrm{.}00-$$$30\mathrm{.}00-$ importance: $23\%$

Ideal Position, size $16\mathrm{.}0/$performance $4\mathrm{.}0-$importance: $21\%$

MTBF$,14,000-19,000-$importance: $9\%$

Which buying criterion is the least important?