I do, but I generally buy manufacturer refurbs and only for very recent hardware (which generally means that someone had "buyers remorse" or something was trivially wrong that a simple replacement fixed).
You might try lowering your price point (and I say that as a general thing, go low enough and someone will buy) or by offering some sort of warranty, even a short one of say, 30 days, or a right to return option for that period. Standing behind them in this way, and truly doing so in a pretty much, "no questions asked, almost," manner tends to put buyers' minds at ease.
A lot of people are justifiably nervous about refurbs in general and particularly in a "you bought it, it's your problem - immediately" situation.
Brian AKA Bri the Tech Guy (website in my user profile) - Windows 10 Home, 64-Bit, Version 1803, Build 17134
. . . the presumption of innocence, while essential in the legal realm, does not mean the elimination of common sense outside it. The willing suspension of disbelief has its limits, or should.
~ Ruth Marcus, November 10, 2017, in Washington Post article, Bannon is right: It’s no coincidence The Post broke the Moore story