Thanks for the Welcome!
I went to an Alesis dealer shop in Greece (djmarket.gr) and asked about the Studio kit. The guy told me that it's still not available in Greece and other European countries (I don't know if that is true). The delivery date is not set yet and there are 40+ pre-orders and backorders!
I sent another mail to Thomann as well and this is what they replied...
Dear Dimitris,
unfortunately the backorders for the DM10 kit are so huge, that we will not be able to offer the edrum again before beginning of July L
Mit freundlichem Grüßen,
Musicalement,
Yours sincerely
Adrian Haußner
Drum Department
Expected date of delivery for Musicstore: 15.07.2010
http://www.musicstore.com/en_EN/EUR/Alesis-DM-10-Studio-E-DrumSet-/art-DRU0021083-000I'll have to wait some months then...