According some webshops here in the Netherlands, the Turbo professional editions will cost EUR 399,00! (That is excl. 19% VAT so: EUR 474,80 incl. VAT ).
The academic version costs : EUR 82,00 (incl. VAT).
I think these are very reasonable prices for a product with no less features as the BDS professional edition.
Note that you can only install one Turbo per PC.
The free Explorer edition is also available on CD for a lousy EUR 25,00!