OP has nothing at all to be ashamed of. The market is the market. I'm not telling anyone anything they don't already know by saying the supply is low for these late run games and there are people out there that want them.....which means the price goes up to these ridiculous amounts. Mind you no way in hell i'd ever pay these amounts but low supply + demand = $$$$. Why should games be any different?
Do coin collectors get this much flack for not spending their mint rare 1943 pennies at face value?
If a collector walked into a pawn shop and asked for a double eagle out of the blue, for 10-20% off market value, they would get a ton of shit. Over the years this has happened here repeatedly to people who don't care much other than to make money or earn shelf candy. You've been here long enough to see one or two I'm sure.
I'm not saying the OP did anything wrong per say, but when you are looking for the rarest of items, know there is only a small chance anyone has one, and aren't an active member other than to buy/see/trade, people here are going to say something about it. probably a bit unfair at times, but justified most of the time.
No one is saying that supply and demand aren't affecting the price or that the price is wrong, just that most of us, like you, won't pay it. (Although I would argue there are more MC than some other late games out there and that the supply is somewhat exaggerated by E-bay and the internet culture of youtube/twitch/amazon/ etc.)