Yes all AKC coaches can sell KBs as we get a discount on them. A 16kg may still run you about $80USD - depending on the person selling. If they have one on hand that'd be best obviously.
And though it may not be apparent immediately, but there is a big difference between these bells and regular RKC-shaped bells. The handles and bell size are all uniform size so your technique can be precise - which with snatches, swings, and jerks is a big deal.
If you are just doing Turkish Getups, some swings, renegade rows etc... then it's not a big deal and you can probably find cheaper bells.
If you want though I can ask on the AKC forum and see if I can find a coach in Calgary willing to help.
Sarah - yes the corkscrew technique is a must for efficiency in snatch work. Though very natural when you do swing snatches and not vertical RKC style. Cotter and Fedorenko have some vids on youtube up, or watch any competition video.
This is a great technique video