Some eagle eyed individual posted on this forum (I think) that they had bought a trickle charger at Crappy Tyre for under $10. I'm sorry I can't find the original post.
Thanks pal, I have one now as well thanks to you. They are on special at the moment reduced from $25.
I went to the CanT on 200th St in Langley Sunday afternoon. They still have several left.