welcome toscar,
the beach in
icmeler is a hive of activity from pedelos to paragliding, ive been on the pedelos, (but you have to watch the currents they will take you for miles and will have to by towed in) which were cheap, ringos are cheap as well and are great fun.......but not sure about the parasending. there are organised diving trips which you can find more about price on home page under activities on left of page.
one tip is dont buy excursions/trips from sellers on beach front im led to believe they dont carry any insurance
im sure you will enjoy your holiday, it's a fantastic place
wayne