30 years old exterior wooden stairs, repair or replace?

We manage this condo in lake tahoe region, and as you may know, the area snows a lot during winter time. The exterior wooden stairs (circled in red) is about 30 years old, and we are thinking about doing some retrofitting, although it still works fine. Previous owner replaced some railings and steps as we can tell. I recently got a quote from a contractor to replace the whole stairs, and quote is at $53,000 staggering price. To reinforce or repair it, we could replace some railings, treads, steps, and reinforce the posts, and that would cost a few hundreds or $1000 – $2000. I’d like to bring this up to this forum to hear some experts’ opinions.