I hate to use this as a venue to address issues I'm having with the Canonical Store, but I'm somewhat disappointed in it. On the 21st of June, I ordered the "Ubuntu Certified Professional - Exam Bundle." As of today, I still have not been able to get the codes to register for my exams with Pearson VUE. Last week, I contacted Merchandise Mania (the operators of the Canonical Store) and they said they would pass my concerns on to Canonical and someone would contact me "if they can help." I still haven't heard anything. So if anyone involved with this at Canonical reads this, I'd greatly appreciate an update.
Update: I was contacted this morning by a very nice Canonical employee who has gotten me sorted out. It's this kind of customer service that I appreciate in a company. Thanks, Canonical!