If you’ve hit your forties, you’ve likely noticed one undeniable truth after a long day at the desk: your body doesn’t forgive cheap seating the way it used to. The $120 chair from the big-box store that seemed fine in your thirties now exacts a toll of stiffness and nagging lower back twinges. That’s not just aging talking. It’s a clear signal that it’s time to invest in a serious ergonomic chair. A Herman Miller Aeron, a Steelcase Leap, or a Haworth Fern can run you $1,200 to $2,000 new. But here’s the good news: you don’t have to pay that, if you shop like someone who knows the game. The trick is learning where the deals hide, and being patient enough to wait them out.

First, understand what makes a premium chair worth the chase. These chairs aren’t just cushions and levers. They’re the result of decades of research into spinal alignment, pressure distribution, and movement. The mesh on an Aeron breathes and flexes. The LiveBack system on the Leap mimics your spine’s natural curve as you recline. You can sit in one for ten hours and feel human, whereas a budget chair starts punishing you by hour two. That’s why the secondary market is your best friend. Because these chairs are built to last fifteen to twenty years, thousands of them end up on Craigslist, Facebook Marketplace, and office liquidation sales when startups go under or corporations upgrade their floorplans. You can often snag a used Aeron for $400 to $600 if you know what to look for. That’s a 60 percent discount, and all it costs is a little time and a willingness to wipe down some armrests.

But don’t just grab the first listing that pops up. You need to verify the chair’s condition and authenticity. Counterfeit high-end chairs are rare but not unheard of in online marketplaces. Check for the manufacturer’s label under the seat, which includes a serial number. Then test every mechanism in person before handing over cash. Sit in it for at least ten minutes. Feel for creaks, wobbles, or a gas cylinder that doesn’t hold height. Replacement parts are available, but they eat into your savings. Also ask if there’s any tag or sticker showing a production date—older chairs can still be fine, but you’ll want to know if it’s from 2004 versus 2016. The newer the better for foam and mesh wear.

If used shopping makes you nervous, there are other routes to deep discounts. Look for returns and open-box deals on retailer sites like Madison Seating, which sells refurbished and overstock office furniture at steep markdowns, or try Btod.com, which specializes in high-end ergonomic chairs at lower price points. Many manufacturers themselves run periodic sales. Herman Miller often has a 15 percent off event around Black Friday or the end of fiscal quarters. Steelcase occasionally offers 20 percent off through their friends-and-family program or via corporate partners. If you work for a large company, check your employee benefits portal—many employers have partnerships with office furniture makers that give you an instant commercial discount. That alone can bring a $1,400 chair down to $1,100.

Another overlooked tactic is negotiating. This is a no-nonsense world, and salespeople have room to move. Call a local authorized dealer and ask for their best price on a specific model. Mention that you’re also considering a used chair for half the cost. Often, they’ll shave off a couple hundred dollars to close the sale, especially if you show you know exactly what you want. Don’t be shy about asking about floor models or discontinued colors. When a manufacturer changes their fabric lineup, old stock gets marked down sharply. A chair with an odd lime-green upholstery could cost 40 percent less simply because nobody else wants that color. It goes under your desk anyway.

Timing matters as much as venue. Office liquidation sales spike in January (post-holiday) and July (fiscal year ends). Universities also purge buildings in May and June. If you live near a metro area, set up alerts on Craigslist and Marketplace for words like “Herman Miller,“ “Steelcase,“ and “executive chair.“ Have a plan for transport—these chairs don’t fold. Rent a friend’s SUV or bring a van. And when you find a deal, act fast. The best ones disappear in hours. But never skip the sit test out of haste. A chair that doesn’t fit your height and weight won’t save your back, no matter how much money you saved.

Finally, think about accessories separately. The expensive cushiony headrests and lumbar pads that dealers push are often overpriced add-ons. Many premium chairs already have excellent built-in support. Instead, spend a small amount on high-quality casters for hard floors or a decent footrest. Those you can source from third-party sellers for half the price. You’re not being cheap. You’re being smart about directing your budget toward the thing that matters—the chair itself.

In your forties, every dollar spent on preventing pain is worth two spent on curing it. A premium ergonomic chair is one of the few purchases that pays you back daily in comfort and productivity. The retail price is a fiction. The real cost is what you’re willing to search, compare, and negotiate. Do that, and you’ll sit well for the next two decades without having sat on a fortune.