hi
for a mechanical machine here in Tucson its usually 69.00 and for a computerized its 89.00 but they really go through and fix and clean the machine,so its worth it,and at the shop I go to,if it unfixable,like my grandmothers was,there is no charge at all.
like tim said if you get another 15 years out of your machine ,then its well worth it.
kathy :-)