How much does the filter cost if you don't mind me asking?
Aircraft piston engine oil filters generally run $20-$30
....there was an engine case with a label saying APU value $300,000.00 [I rounded out the amount] Aviation is a Latin word for unbelievably expensive.
Now-a-days, that's the "core value"
Modern APU's are often over $1,000,000
Main engines (turbine) many times that amount. They are often leased items.