The minority might not be as small as you think, or else you would have already sold yours. I’d pay the extra $250 just to know someone didn‘t use it whole setting on the toilet. Besides, the tax write offs are way better on new. The warranties are better on new. I know how hard I can be on devises. It’s like the car business, if you price it to close to new people will spend the little extra and get a new model. Thats just life With most all products.You are in a very small minority. Most people do not buy new as its very overpriced. You can wait a year and get it much cheaper. This is the perfect time to sell, but again, very few are in the market for super expensive tablets. Your average buyer will look at a $1K+ iPad Pro and a MacBook Air or Pro for the same price or cheaper, an almost every one will take the laptop. Especially an M1 equipped MacBook. They will get a cheap iPad for $300 if they want a tablet. There are no $300 MacBooks.
And.. Anyone looking to buy a 12.9 are not looking nor expecting to buy the cheapest $300 iPad.