I bought a 20 pack of the Verb printables from NewEgg about 2 years ago for $30 with a $10 MIR, you just have to keep looking as they aren't on sale nearly as often as the SL discs. Might want to keep an eye out at:
http://www.rima.com
http://www.meritline.com
http://www.supermediastore.com
I still have about 8 of the original 20 left as I don't see many movies deservant of the extra cost.