As of yesterday, the 21st of April, the operator Tele2 has activated MO-billing on shortcode 7733. This means that your customers with a Tele2 sim card are now paying for the message sent to the shortcode. The amount they are charged is always € 1,50.
Of course you will receive a payout for the MO message sent by your customer. Have a look at the Payouts page for the actual amount.