Reputable secondary ticket sales sites?

[JQ]

Are there any?

I have been tasked with trying to source tickets for a sold out gig for a big birthday for my father in law, by my mother in law. I'll often use Twickets, but there's no chance tickets for this will end up on there - Paul McCartney in Manchester.


I can see tickets are available on Viagogo, Stubhub, Seat Unique and Vivid Seats at quite staggering prices, but I've never used any of those sites and none are for resale via Ticketmaster, the official seller. Having heard lots of horror stories about resale sites, what's the likelihood of her being ripped off? Are some more reliable than others, or is she better off just accepting that she's missed out.

All advice gratefully received, thank you.