Market value is simply the amount something will sell for on the open market. Many factors contribute to this. Prior sales are absolutely important, but are also just one variable in the equation. That is what makes this different. For a non-commodity item with low quantity, the market value is lot more unpredictable and strange than a [I'll call it] commodity cart / high frequency traded cart like a random SMB cart or something.
For high-value items like this, there are so many things to take into consideration....how badly the seller wants to sell it, how badly the buyer wants to buy it, the condition of the cart itself, and many other factors.
So, let's say that there have been two sales over the past year of $10,000 and $12,000. Several months later one is up for sale. Well, the market value of the cart is not a de-facto $10K, $11K, $12K, etc. Sure, that is helpful information and a piece of the puzzle. But what about carts that DIDN'T sell? I don't know if there have been any, but as an example, if in January one sells for $10K and in February one sells for $12K and then March through October one is sitting at $12K and doesn't sell, well obviously 12K isn't as solid as perhaps previously thought. So you can't just look at the one that sold in February because one has been on the open market since then and not selling. [I'll assume similar condition for this example]
I'm not saying those numbers are meaningless, but they are just one piece of the puzzle.
Also, if random rich person just doesn't wanna deal with haggling and treats $100s like pennies, and decides to throw $20K at a cart that just happens to be the right place at the right time, well that doesn't necessarily define the value either.
At the end of the day, it is difficult and there is no clearly defined market value. There can't be on rarer/low-frequency sales such as this. The fact that all of us here have different ideas of value and which of these factors is more important, is an example that it can't really be easily determined.
OH well, these are just some random thoughts. I don't really have much skin in this game as I have no desire for a SE cart, pretty much ever.
Edited: 11/23/2017
at 09:53 AM
by sadikyo