Seems like when I first started playing, I would get a gold pipe more often but now I rarely do. I wonder if they change it for players that have been around for a while so that they are more likely to purchase items with actual money, which would be incredibly sleazy considering I pay for the gold membership. I get that the gold pipe is supposed to be uncommon hence why those things have more value, however I launched from a 50 item pipe all 50, no gold.