I was implying that the inflated prices for tour discs and other new release discs seen as collectible would disguise or offset less noticeable price increases. It doesn't surprise me that stock sale prices would be stable for a while due to retailers being desperate to move what stock they do receive.
Why would retailers be desperate to move stock? Given the overall lack of stock, it should be just the opposite. I suppose there might be a few retailers who've been aced out of inventory that are having cash flow issues, but trying to solve that by letting new, restricted volume, stock go at less than market is a good way to ensure your cash flow issues continue.