I don't remember about the swearing but I only read Client and Favor quite a few years ago. What I particularly liked about them was the humor. Yes - I noticed at least 2 different publishers: E-Reads and Pegasus.
#1 and #2 are available at Sony in EPUB and Books On Board (not in EPUB but for anyone else who is interested), but again, I don't know if they are available to Canadians or not, but you might check those out. Booksamillion has Favor in EPUB. Kobo has Favor also. Unfortunately none of them have the $2.99 books.
Books on Board
http://www.booksonboard.com/index.ph...parnell%20hall
Sony
http://www.booksonboard.com/index.ph...parnell%20hall
Booksamillion
http://www.booksamillion.com/search?...&search=Search