Parts are about $380 for the 4 (Monroe).
--------- Yes, but you're going to have a harsher ride quality. One of the first service procedures I had done when purchasing a used Camry was to remove the Monroe Sensatrac in good condition and replace with new original factory struts to avoid that jolt that went all the way up through the suspension into the steering wheel every day when I drove over a certain bridge transition. Toyota calibrates the valving and damping for specific applications, where I'm not sure Monroe even has a different part number for four or six cylinder. However, I'm not sure I'd be replacing struts unless there is evidence replacement is required. I don't buy the theory that mileage is any representation of wear. If the damping is weak (the motion of the suspension is excessive over bumpy roads), or there are leaks, or the unit is "freezing up" ie., failing to move properly, or you have uneven tire wear, then I would replace them. Tire stores seem to love to recommend strut or shock replacement even when unnecessary. (and then IMO, sell units that are inferior to the originals) - at least with Toyota, most all aftermarket substitues are inferior in durability, quality and fit. I keep my vehicles a long, long, time and have learned through experience to stay with Toyota parts. Just my opinion of course, do as you like. What's the saying? the bitterness of low quality is remembered long after the sweetness of low price is forgotten.