eBay is a difficult thing to read. One day a deck could go for $100, and the next day it could go for $30. It's all about demand, and the amount of bidders. Anyways, Golden Nuggets prices are basically dependent on the color of the deck. Red and black decks are seen often, so the usually do not price very high. However, blue and orange decks are EXTREMELY rare, and they typically gross a higher price.
Anyways, in my experience it is kind of like this:
Black<Red<Green<Brown<Blue<Purple<Orange
And that is just the Las Vegas Golden Nugget's. The Atlantic City decks typically go for a little less.
The Past 3 LV Goldens on eBay went for around $40-$50. However, a brown deck recently sold for around $95. The past couple AC decks have gone for around $25.
All that is for sealed decks. Open decks usually go for $8-$20 or so, with some exceptions dealing with color. Anyways, yeah I have 3 open decks on eBay. Right now they're at like $10, but there is still 5 days left. It might not go up much, so you might be able to get a steal.