Return Tickets from London to Prague at 30 July +

anyone could help? I have return tickets from london to Prague at 30th July. Due to I could not get visa on time I have to sell it. The price is 90 GBP, I would like to pay the fee for name changes which is 30 Euros. Please let me know if anyone would like to have it. The following is the details: Outbound Flight: Date: Mon 30/07/2012 Airline: Wizzair Flight number W6 2602 Departure 07:30 London EN Luton Arrival 10:20 Prague Prague-Ruzyne Terminal 1 Return Flight : Date Tue 31/07/2012 Airline Wizzair Flight number W6 2609 Departure 14:05 Prague Prague-Ruzyne Arrival Terminal 1 15:05 London EN Luton Upon your booking, the airline company has established the following: - Latest check-in Time: 40 min - Hand baggage: 10 Kg - max 55x40x20 cm. - Checked-in baggage: Max 32 Kg per person. The company requires a payment for the checked in luggage. The reservation includes 1 HAND LUGGAGE FOR PASSENGER. Please let me know before 28th July. Thanks.