Its one think to differentiate between $40 and $300, of course.

Its another to list actual prices of various products side by side in a comparison chart, that data becomes stale real fast and is factually inaccurate at that point.

There is a vast difference in saying "For $500 I expected more" and saying "Product a works out to $4 per plumbus and product b works out to $3.50 per plumbus and product c works out to 3.75 per plumbus" ... that data becomes factually misleading as soon as one of those prices changes.