I also recently purchased it at Costco with the coupon but in a different color.  Inside the installation kit is the customer service number which is 1-888-459-9220 to Harmonics.  I called customer service today about the moldings and they immediately emailed me a copy of their product listing with pricing on the moldings and the accessories.  Their is a special shipping promotion today 8-1-07 of free shipping on accessory purchases excluding moldings if invoice total is greater the $50.00.  I did inquire as to the shipping costs for the molding and she informed me that it was $28.50 up to $250.00 in molding purchases and for purchases greater than $250.00 it increased based upon the invoice total.  The moldings consisted of the 4-in 1 molding for the transitions, FlushMount StairNose, quarter rounds, skirting boards, etc.  It is suppose to be a perfect color match.  They do not have a website but the customer service representatives were extremely helpful to us today and very prompt in their emails of the product listings.  The floor itself was extremely easy to install but you do need to purchase the installation kit at Costco and follow the special directions if the installation is in a "wet area" like a bathroom or kitchen.  If you fail to follow the instructions or use their installation kit it will VOID the warranty. 
I was so impressed that you can not SEE any seams when installed.  I have seen many laminates and you can usually tell where the seam was and I can't tell at all.

Good Luck and I hope this assists you.