People like you buy it because you know if you don't, you'll have to pay $500 for it later on should you want to purchase it later, when HT refuse to make more of them, in order to keep their brand demands up.
So people like you compare the possibility of having to pay $500 instead of their retail price which even though is now $100 more, is still "Relatively" cheap compared to after market price, that you "voted" on the new pricing with your wallets, in fear that you might "lose out" in the future, as such people who actually wants to make the purchase & those that simply "not sure about it" decide to Buy now Regret later, as such creating an artificial demand to the market, coupled with production limit HT applied, encourage even further purchase of their products by people who might not even be interested in this hobby and simply making their purchase in hope of making $300 profit.
If people would come into sense and purchase items that they actually want, the whole market wouldn't be in such negative condition, there will be sufficient supply & demand, and less opportunity for scalpers to drive up the price, and giving companies more reason to charge more on their products, simply because:"Hey, why let resellers profit out of it when we can take a bigger piece out of the pie", this in return drives the resell market price even higher up, until one day it becomes totally unaffordable for majority consumers that the interest starts to fade off & the market collapse.
Sure by then there will be a whole new set of hobby emerging, maybe self moving figures with A.I installed that turns what we have currently obsolete. Just like how G.I Joes became obsolete. It's a miracle for Barbie dolls to survive until this day without much change though.
But remember consumers like yourself is a key part in driving the prices up, resulting insufficient supply to meet the demands, as such 3rd parties come in and fill in the gap, but at the same time the same consumers like you condemn such act, and blaming them simply because companies refuse to produce more, i'm not saying it's right to sell recasts, but you have to understand if not them it's probably someone else, consumers wants what they want, whether tru legal or illegal way, they will want to get it as long as they can afford it. This is human nature. Sure righteous person like you may refuse to participate in such illegal act by sacrificing your urge, or willing to pay more for the original product, but you don't represent the majority of mankind. But unless you say you've never downloadad any illegal mp3 or movie files, that doesn't make you any holier.