Benjamin Hyland-Ward, 19, of Westfield Avenue South, Saltdean, left about 375 people disappointed after taking around £60,000 for tickets that he failed to produce or provide a refund for the Bestival event on the Isle of Wight in September 2015.
Mr Hyland-Ward was charged with nine counts of fraud by false representation last year and pleaded guilty at Lewes Crown Court on December 12.
He appeared at the same court on Friday, January 20, and received a 21 month sentence.
Investigator Amber Forshaw-Briant said: “This has been a long and complex investigation involving a large number of people and we’d like to thank those involved for their patience and assistance.
“We would also like to take this opportunity to remind people about the risks involved by purchasing tickets through sources that aren’t reputable and that is the offer is too good to be true, the likelihood is that it is.”
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