I wouldn't pay until you see the kit in front of you. When you see the kit, check the following things:
1. Expiration date on bottles. You don't want the kit if it's not good at least for a year.
2. The K-2006C should have bigger bottles (2oz bottles) of all reagents instead of 3/4oz. K-2006 is identical, but smaller bottles, and can be bought on amazon.ca right now for $147.
3. Make sure it has the FAS-DPD test still inside. (R-0870 powder and R-0871 yellow top dropper)