These 1975 Christmas stamps don't indicate the price per stamp, as

American Turners Issue National Postal Museum

1579 - 1975 10c Traditional Christmas: Madonna and Child - Mystic Stamp Company

Christmas Tree Prices Will Likely Increase for These Reasons

Letters from Santa

1970-1979 National Postal Museum

1975 Christmas Stamp

13 Rare Stamps to Collect in 2023 (& Alternative Investments)

How To Donate Used Stamps To Raise Money For Charity - Moral Fibres

Stamp Price Data Analysis