Yes... look on Ebay or a similar site, or local Craigslist in your area. There's always folks upgrading and selling the old gear at a nice discount over new. I picked up some gear that way and have sold my old stuff the same way.
HOW TO DO IT: Find an interface that someone is selling at a price you would consider buying. Now, do a google search of the manufacturer and find the gear on their site..... look at the specs. If it has what you need and is supported by ASIO drivers, you can buy it or make an offer.
It's also not a bad idea to come here and post about the interface you are considering, and ask if it's a good one to buy. There are a lot of interfaces out there that are really more trouble than they are worth. Some of the old-timers here, myself included, can give you a thumbs up or a thumbs down since we have been helping folks for years and have seen the struggles of people who bought the "wrong" interface and are now trying to get it to work right.
That way, you have the advice you need to make an informed decision.