I don't know if the Source carries the sub c cells.
As far as The source and Radio shack goes.
Radio shack was bought out by intertan.( i believe) which iwas the main supplier for the radio shack"s. The were also told that they must change there banners. (name logo etc...) by july 1 2005. that is why the nomore radio shack in canada(actully there is a couple of outlets.) In a direct way there no longer affiliated with radio shake down in the States. Even though they do carry similar products(being nice here).