Till 31 December 2009 FamilyTreeDNA offers a discountprice for both the 37 as the 67 marker Y-DNA. The 37 test costs $119 (reg price $149) and the 67 marker test $209 (reg price $239.

Maybe nice as a Sinterkaas or Christmas present?

Tests can be ordered at:
http://www.familytreedna.com/group-join.aspx?Group=Berkhoff