Toyota Repair: RE: 2002 Toyota Camry V6 Struts, toyota camry v6, 2002 toyota camry

Question
2002 Camry V6 with 126,000 miles on it.  Performed 120,000 mile scheduled maintenance at local Toyota dealer.  Toyota technician said rear tires have cupped condition and it may be caused by weak struts.  He wants to charge $1,200 to replace the rear struts.  How do I know if weak struts actually caused the cupped condition?  Is there an objective method to actually test if I have weak struts or not?  I don't want to pay $1,200 if my struts are fine but the cupped tires were caused by other sources.  Lastly, is $1,200 a fair price for replacing both rear struts?  Thanks in advance.

Answer
That seems like it's way too much, there is a method to check the struts, check to see if they are leaking, if not, do what is known as the bounce test, bounce the rear of the car up and down and then stop, if it moves up/down after that more than once the struts are weak, if they feel solid then there is nothing wrong with them. Cupiing can also be caused by an out of balance condition or an out of alignment condition, I would replace those tires and make sure they are balanced and then keep an eye on them to see how they wear, it's a lot cheaper than spending $1200.