This Canadian website sells classroom materials for a variety of purposes. The texts are written for ESL learners from Literacy to CLB 6. The books range in cost from about $30 to $80, for teacher or school. CDs are provided. Texts are skill and theme based (health, food, family), also includes  Canadian holidays, vocabulary activities and games. New texts contain PBLA resources.

Subscription required:
http://www.eslresources.com/

Additional Resources:

Lessons are task-based for PBLA:
http://www.eslresources.com/Foof-Related-Tasks-Shopping-and-Beyond.html

http://www.eslresources.com/Listening-Reading-and-Writing-and-Assessment-Janet-Kan-Includes-2-CDs.html

Outcomes: Assessment 4-book series for CLB 1–4, based on CLB 2000, can be adapted for PBLA tasks:
http://www.eslresources.com/search.php?mode=search&page=1