There’s a number of possible reasons:
- These are the lowest prices found, not averages, so they will be inherently harder to find.
- The source with the lowest price often sells out at that price extremely fast.
- Most of the time, these are bulk-buy prices.
- In odd cases, there can be a discrepancy in the data. Possibly from an unproperly formatted price.
The data is meant to be a reflection of the market. Don’t go crazy trying to find specific prices.