We just encountered an issue.
In our cart prices are shown correctly. The item shows it's €2.48 price.
Going into checkout, this price changes to € 50.00 (Unit Price is renamed snippet of the original snippet Price incl VAT).
I've double checked all templates with back-ups and I am unable to discover any change in the files over the last few weeks. And thus the source of the problem is hard (almost impossible) to find.
I hope you can have some insights of what might trigger this or what I can check to resolve the issue.