HeavyoakThe regular Caps Lock is centered stem, the stepped Caps Lock is off-centered. Buying single keycaps is not possible, it would be a logistical nightmare and render the remaining set incomplete. You could try your luck on the various mechmarkets of this community, since there are multiple Caps Lock keys in this set, chances are good someone doesn't need the one you need himself so they can sell it to you.
any chance of me being able to buy just one key?
I don't need to replace my whole set, just my current caps lock key.