While applying my eye shadow the other day, I noticed I had two VERY similar colors. The darker side from the Too-Faced Shadow Duo "George & Weezie" is just a smidge darker than Prestige's "Golden Retriever" shadow.
I had to move them under the lights to really notice the difference. Prestige runs about $3.99 at Rite-Aid, while Too-faced duos are about $17 last time I checked at Sephora. So while you're not getting the lighter shade, if you just want the darker one, Prestige could save you about $14.