2010 Tacoma has power steering gear leak at 54000 miles.

What is your question?

My Toyota dealer service said my 2010 Tacoma 4wd with only 54000 very gently used miles has a leak in the power steering gear that will cost approx. $1400 to replace. I have never seen any spot on my garage floor and have had the truck serviced every 5000 miles. Isn't that a bit unusual for that to happen, and is that a reasonable cost for that repair ?