Yes and no.
Yes to Jesus Christ as mentioned above, but I don't think he was selling anything material.
For selling material stuff, if it's good and affordable, then yes it's easy. If what you are selling is obviously overpriced, of questionable quality, or both, then it's harder to be honest. If a person wants a computer, but for no specific tasks, but wants it to last, then I sell them a Mac (like an iMac or iBook) and because it lasts longer than a PC and has fewer problems, the product almost sells itself. Mac OS is also easier to learn than Windows thus saving the buyer time after they make a purchase.
But when I sold PCs, I was pressured not to mention the Macintosh option since the chain store just broke off relations with Apple. Secondly, we were pressured to sell in store warranties which would replace or fix the gear, but not offer Apple type tech support or answer questions. When the store now only sells PCs and your sole job is to sell them with warranties, or lose your job, then the work becomes uncomfortable. Back then, the big push was the stores premier seller, the eMachine line which was not up to par back then.
Being honest, I didn't sell those warranties, but I did sell those machines and told buyers about how to defrag the machine often, get used to reinstalling Windows once a year, and letting them know that they may have to get a new power supply in a year or two. Customers were glad I told them what they were getting up front so I sold a lot of them.
The service was just replacing stuff, which could take a long time and leave the user without a machine for weeks, or longer. But as for small fixes and helping a person work with a machine, the PC companies deemed that useless. If a person wanted to put RAM in their PC, just mail in the machine, they would do it, and ship it back...eventually.
With Apple service and support, they tell you over the phone and there's no need to lose computing time. The PC companies did not want to spend money hiring and retaining great customer service. Apple usually was a stickler about customer support, and since the late-90s, they have steadily improved.
No wonder Apple is now #1 in customer support. And it's worth the slightly higher price tag.