Ticnet dicourages all consumers to purchase tickets on the secondary
market. It’s not illegal, but as a consumer you take a number of risks.
There is no guarantee that the ticket you purchase is valid, no matter
what the reseller says. If the event is cancelled, you are not
guaranteed to get back your money.
Please note that Ticnet can only guarantee that tickets sold by us, or
by our outlets, are valid.
Here is a recommendation from the Swedish Consumer Agency about the second hand market: http://www.konsumentverket.se/Nyheter/Nyhetsarkiv/Nyhetsarkiv-2014/Att-tanka-pa-nar-du-koper-konsertbiljett/
. Note, the text is in Swedish.