I agree with Bostonian. Although at the rate of tuition acceleration, I am estimating 150K per year in 8 years for an top college.
That looks high. College costs have been rising faster than inflation by about 2 to 5% a year. Assuming a general inflation rate of 2% and college inflation rate of 7%, the $60K cost today would grow "only" to $60000 * (1.07^8) = $103,091 . A college inflation rate of 5% (slightly higher than recent college inflation) results in a future annual cost of $88,647. Here is some data from the College Board.
http://advocacy.collegeboard.org/sites/default/files/college-pricing-2012-full-report_0.pdfTrends in College Pricing, 2012
PUBLISHED TUITION AND FEE AND
ROOM AND BOARD CHARGES
Average published tuition and fees for in‑state
students at public four‑year colleges and
universities increased from $8,256 in 2011‑12
to $8,655 in 2012‑13. The 4.8% ($399) increase
in tuition and fees was accompanied by a
$325 (3.7%) increase in room and board charges
for students living on campus. At $9,205, room
and board charges account for more than half of
the total charges for these students.
• Average published tuition and fees for out-of-state students at
public four-year institutions rose by $883 (4.2%), from $20,823 in
2011-12 to $21,706 in 2012-13. Average total charges are $30,911.
• Average published tuition and fees at private nonprofit
four-year institutions rose by $1,173 (4.2%), from $27,883 to
$29,056 in 2012-13. Average total charges are $39,518.
• Average published tuition and fees at public two-year colleges
increased by $172 (5.8%), from $2,959 in 2011-12 to $3,131 in
2012-13.
• Estimated average tuition and fees for full-time students in the
for-profit sector increased by about $435 (3.0%), from $14,737
in 2011-12 to $15,172 in 2012-13.
• Published prices at public four-year institutions rose more
rapidly between 2002-03 and 2012-13 than over either of
the two preceding decades, but the average annual rate
of increase in inflation-adjusted tuition and fees at private
nonprofit four-year institutions declined from 4.6% from
1982-83 to 1992-93, to 3.0% from 1992-93 to 2002-03, and
to 2.4% over the most recent decade