Yes, they are the same books, although I believe you ordered from Malaysia, as I noticed on the left hand column:
Shipping & Handling
For hardcopy packages, we currently deliver from Kuala Lumpur, Malaysia via Registered Airmail or Air Parcel that will take between 1-3 weeks to reach you, subject to destination and customs clearance.
http://www.mathabacus.com/store.htmland I wish you would have seen this note a little bit further down on the left hand column:
For North America, please visit our distributor's site:
Nurtureminds.com
Did you e-mail them and ask when your order shipped and if it has tracking? I hope it will be here soon!