You just confirmed my suspicions. Yesterday,I emailed one of the venders who sells razor kits and asked about the gold finish. I wanted to know if it was 24k gold, upgrade gold, or something else. His response was if I was concerned about durability (and you ARE if you plan to sell the razor), then he highly recommend you but the Titanium Gold, not the Gold.
The Titanium plating is twice the money, but I'll just add that into the price. I would recommend you contact the vendor who you bought the kits from and to return the ones you have not used.