yeah, a couple of my discs jumped to a huge purchase price.
Display the purchase price column in list view and sort by most expensive to see which ones need fixin'

oops, there is no column for price paid.

Go to Tools - Charts & Graphs and display a graph for Price Paid - Total.
The expensive ones will probably make the graph jump up really high for that year.
Narrow it down by Month and then Week until you see which week contains the high costing disc.
Then sort your collection by Purchase data and look through the discs which were purchased on that week which has an over-inflated price.

The fix is to manually change the price back to whatever they were. You won't have too many of them - I had two which had jumped in price. If you don't remember what you paid for them, make something up based on what most discs cost back then.

Quoting oleops:

Quote:
Seems for me every title with no price jump up to this amount, and as I start using Invelos after purchase about 500 titles I would have to fix all those,

That sounds like a job for Bulk Edit