I can second Shiza's reccomendation of the CC route. That's where I took my Perl classes and they cost me a whopping $22 a unit! Can't beat that. :)

I took mine at Canada College in Redwood City, CA, but I haven't looked lately to see if they still offer them though. And do remember that if your area is like mine, there is more than one CC in your area so check around.

HTH!