Sum data based on product availability by comparing years.

Sudharsanan 

Result = 
VAR _filter = 
INTERSECT(
    CALCULATETABLE(VALUES('Table'[Customer]),'Table'[Year] = 2021),
    CALCULATETABLE(VALUES('Table'[Customer]),'Table'[Year] = 2022)
)
RETURN
CALCULATE(
    SUM('Table'[Price]),
    'Table'[Year] = 2021,
    _filter
)

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