I found eBay to be strictly an USA thing, plus Canada at best for those who are OK with driving for half a day, or even two.
I have the app installed and the shipping costs to Eastern Europe where I live often surpass 50% of the price of the tech itself.
I'd love to reuse. A lot of us out there who are still oldschool-ish and can work miracles with older tech. But I am not about to spend the same money I'd spend on simply building a PC with EATX case and the ability to shove 12 HDDs in there. I'd still end up spending more on the local market, mind you, but we're looking at 10-15% maximum and I don't find that a worthy difference to wait 3 weeks for an older server, especially with a very high likelihood of also having to pay 20% of the value of it to customs.