Haha, I'm so witty... get it, Peridot, Peri-dupe?
Anywho, so I bought Gold Rush from Gap because it's a dupe for Chanel Peridot. Gold Rush was $6, Peridot is $25, and they look exactly the same... so that explains that :)
Oh, and OPI's new Spiderman collection has a dupe as well, Just Spotted the Lizard. But, according to Scrangie, it's more brushstroke-y than Peridot or Gold Rush, so I picked Gold Rush :)