I have about a thousand eBay transactions going back the mid 90s. I've purchased three pinball machines, and all of them were misrepresented to varying degrees. Two of the three I definitely wouldn't have pulled the trigger on if I would have been able to see and play them first. The other one I bought back in 1999, so I don't think that counts anymore.
Years ago I bought a laptop from someone who it turned out was trying to scam a lot of people, to the tune of around $50,000, by taking money and never shipping. I sent him an email and contacted the DA of the state he resided in. Lo and behold, he refunded my money.
Good deals are still to be had, but they are much harder to find than they used to be. I just bought an effectively new item for $300 that has a new retail price of $1600, but I have been waiting a year for that item and passed up on dozens of similar ones.
I wouldn't be comfortable selling anything on eBay because of the buyer scams and the very high fees.