The vineyard sets the price you'd expect to pay for such a wine. Then you make adjustments for the vintage and the producer. Keeping up to date on prices requires a good memory and constant effort. The true deals don't last long, and you've got to jump on them right away. The defining feature of the US burgundy market is its unpredictability.
Different importers pay different prices to buy the wines, and have different markups.
Here in Minneapolis, we are lucky to have The Wine Company as an importer. They import the white burgundies of Verget, among other wines. Their markup is very reasonable, and the Verget wines are cheaper here than in most other markets. Most burgundy bargains are wines which are solid value at regular prices, and a lowball price makes them real bargains. All this has major implications for burgundy shopping.