I acquired an early bird 3-day ticket for this years Sideways Festival 8.-10.6.2018 in Helsinki, because of the awesome line-up. Sadly I have a course trip now, that prevents me from attending, so I give it away.
You save 20 EUR compared with the current price (or get 3 days for the price of two). See here: http://sidewayshelsinki.fi/english/
I can send the ticket electronically. So delivery is immediate.