The organization of the Back to Live corona test events does not advise people to buy tickets on Marktplaats.
A spokesperson for Fieldlab Events said this to NU.nl on Thursday when asked.
Tickets for the four events in the first two weekends of March went on sale on Thursday, but sold out within 20 minutes.
At the two events in Ziggo Dome (a concert and a dance event) on 6 and 7 March, 1,300 visitors are expected, who will be divided into five 'bubbles' of 250 people and a group of 50 people.
A week later, two festivals (a music and a dance festival) will be organized on the Walibi Holland event site in Biddinghuizen (where Lowlands and Defqon.1 also take place), where fifteen hundred visitors can be received per event.
They are divided into three groups of 500 people.
More than 180,000 people were interested in the cards.
The demand has remained even after the sale of the tickets, according to several advertisements on Marktplaats.
Users seem to be willing to pay hundreds of euros for the tickets, but the organization strongly advises against this.
"There is no point in buying those cards, because everything is in name and you have to make an appointment with the social security number for the PCR test," said the spokesman.
"In addition, your identity will be checked at the entrance."