Barnard Thomas has relatively inexpensive books of arranged music for Playford and transcriptions of Susato's collection of 16th century dance music.
I publish a set of freely-copy music covering many of these dances. For details, please send me mail or email or go to the SCA Dance and Music web page
Another inexpensive source of freely-copyable music for these dances is:
Kristina Eloisa Pereyra (Lady Phaedria d'Aurillac) 140 Barneson Avenue San Mateo, CA 94402-2908 kpereyra@us.oracle.com
Phaedria's collection is, for the most part, 5-part music with chords. The arrangements are mostly modern in style, but she has been adding more authentic arrangements to the collection.