I still don't understand the point this topic. People can sell their old stuffs and do whatever they want with the money, not just investing in new consoles.
If the OP got 300$ from selling his stuffs, then he must have spent way more than that, maybe 500-600$. In the end he still lost a lot of money. It's not like he got 300$ out of nowhere for the upcoming Nintendo Switch.
And how is this related to the decision of hacking your console or not? If the hack is available, why not do it, even if you have 1 or 100 physical games?