Intro to the Van Westendorp Pricing Exercise

You're welcome and I'm glad it was useful. The VW model here has various problems and limitations and it is not unusual for the lines to be strange or not to cross. The main point is that VW is more of a semi-qualitative tool about stated expectations than a rigorous quantitative assessment. It is sensitive to exact wording and sample understanding.

My recommendation in that case is to describe the lines of interest with summary stats such as the median or other percentile. For example, we might report something like "50% of the sample believed $50 was too cheap, and 75% would consider it at $100." That can accomplish similar insight while staying with the data we have.

As for supplementing with another tool, if you can get more sample then I'd recommend conjoint analysis and/or a "monadic pricing" approach. If you can't get more sample, then I would go with summary stats as noted above. HTH!