Storrie will stick by his welcome pledge to keep tickets to just £20 per game for adults.
The Blues have earned just £89,747 for reaching the group stages. That is on top of the £78,154 they raked in for reaching the first round.
"But I made the decision pre-season that I wanted to get full capacities for games in Europe so the prices have been kept low. Clubs have struggled to sell tickets in Europe in the past.
"We want to make sure we fill the stadium for all the games because we need that money. We have to pay for our travelling costs and everything that goes with it. That includes air fare, hotel expenses and to bring all our staff out to the matches.
"The prize money is ridiculous until you get to the quarter-finals. Let's get it into perspective - there is no money in the UEFA Cup. We need to have full houses at Fratton Park to help off-set the travelling expenses. We need everyone to come out and support us.
"It would be very easy for us to double our match-day prices for these UEFA Cup matches, but we aren't going to. Instead, they will remain at £20 for adults, with the tickets grouped together so supporters have to go to both group games.