Depends upon what you consider decent. I would wager that you're not getting Grand Crus from top producers in the Cote de Nuits for under $50 a bottle even right out of the domaines. Probably not too many for under $100 a bottle either. If you really know what you're doing, you can get yourself some of the best 1er Cru wines, from vineyards that abut the best Grand Crus, from top producers, for that $50-100 range (Stuff like a Gevery Chambertin Combe aux Moins, Cazetiers, or Lavaux St, Jacques from either of the LeClerc brothers), or some of the Vosne Romanee Vineyards that abut Richebourg or La Tache, like Suchots

Now $100 a bottle right out of the domain for a Grand Cru Burgundy from a top producer is a more than decent price, relative to what folks pay elsewhere for them. But for the vast majority of people, that's still an extremely high price for a bottle of wine.