This site is risky but can be useful and it worked really well for us. My impression is that they are selling tickets they do not have, but will try to obtain before the event and deliver them to you. Whether they can do this depends on whether they can get the tickets, and whether they can get them to you in time. Their source of supply seems to be returns - which in the case of a football match is tickets sold by the home side to, for example, season ticket holders who return them before the game. So you cannot be guaranteed that they will manage to find the tickets you have ordered, in the part of the ground you paid for, or even find you tickets at all. Even if they find them, they may not get them to you in time, for they will generally only be released shortly before the game. So I recommend not basing any travel, or making great plans which depend on the arrival of these tickets. But, if you happen to be on holiday or business in a place where a big game is on, and you can live without them arriving, they can be a useful source. Would recommend booking by credit card as you have a better chance of getting your money back if they do not deliver. I write this having just had an excellent night at Sevilla vs Leicester with tickets that were delivered to our hotel and were in the zone we asked for (though not all next to one another). So it worked for us.