neosporin is as right as it's going to get. You won't need Bernard Levine to tell you what the seller says: not a buck brand knife ... the gold could be buffed i guess? ... solingen staineless [sic] 440
He knows nothing about knives. He's selling a cheap, stamped out blade of low grade steel with a colored plastic handle. It ain't real gold but yes, you can buff brass.
If you want an inexpensive commemorative knife, you could get a Desert Storm Camillus combat/utility that you can even taking camping if you get tired of looking at the fancy logo.
There are two kinds of war-related souvenirs. One is a knife actually carried or used in the day, maybe even handed down from a friend or family member. These are priceless. Then there are the ordinary, everyday knives, with their own intrinsic use value, that someone paints a picture or letters on, to raise the price by a lot more than it cost for the paint job.
What is "value"?