I want to go see the Atletico de Madrid vs. Real Madrid match on Feb. 9th, but, frustratingly, the Atletico website isn't working and I cannot buy tickets there. I see options on StubHub, which I've never used domestically. Given the time of traveling to Madrid from Philly, I want to make sure the purchase actually works and I actually get a ticket. Does anyone have any experience with StubHub on the international market? Is it reliable?