I replaced mine with new at 100k, this set is at 50k and appear fine. I will just go new again when it's time. You'll get lots of people saying rebuild them after 20k, blah blah blah, to each there own I say.
I'm at almost the exact mileage you're at and I've noticed my shocks went to **** slowly over the past 3-4K miles. I have OEM replacements sitting at home, waiting for some other goodies to install all at once.
I'm in need for a third set next year maybe sooner with just 38,000 miles all city driving!!!
The shocks are nice but not durable, if you read your manual you should have rebuilt them a long time ago.
If I were tight with money, I guess I would do the rebuild thing.
Rock Auto is cheap enough or Tasca Parts when there on sale.