2011 Toyota Camry - Trans service?

I have a 2011 Toyota Camry LE six cylinder, with 100,000 miles on it. The dealer said my transmission fluid looked dark. A drain and fill will cost $102 but it doesn’t change all the fluid. A flush would replace most of the fluid but will cost $450. What should I do?

Do the drain and fill now. And 10,000 miles later, do it again. I am assuming you never had it done before so that is why your fluid is dark.

Cost for 2 drain and fills - $204, less than one $450 flush.