You're welcome, I'm sure, Dizz! I know a couple who are starting somersizing, and are finding the combinations a challenge, but getting chocolate as part of the plan seems a fair incentive!
The disadvantage of Costco stocking is that it is accurate for a month, or so, and then if someone does like the sales figures, pfffft, go look elsewhere. FWIW, Bloblaws has Lindt 70% Cocoa bars for $3, but if your Costco has the other (sorry, don't remember the manufacturor) you can snag an extra 10% cocoa for half the price.

Kipling
"moderation in all things...." :-)