The short answer: no.
Tickets from GUTS are secured against illegal resale, replication and price change. Everything that happens to the ticket is instantly registered online. The ticket will always remain the same price, and never has more than one owner.
We make sure that someone with a copied code, can't come in. Our tickets only work when they are scanned directly from your mobile phone, while you are connected to the internet.
Now you are sure that you have real tickets, for the real price!