I used to have a really good link to a site that had all the variants and approximate prices, but it was bookmarked on my old computer and I can't remember what it was called now.
I'll see if I can find it again, but don't hold your breath.
Look, you've got it all wrong! You don't NEED to follow ME, You don't NEED to follow ANYBODY! You've got to think for your selves! You're ALL individuals!
Yes! We're all individuals!