Lowe’s has the Bosch 7-Pack Bi-Metal Wood/Metal Cutting Reciprocating Saw Blade Set (Item # 515811 | Model # RAP7PK) on sale for $9.98 (regular price $15.98).
Linky
Shipping is $5.99, but store pickup -if available- is free
Alternatively, Amazon has it for the same price: Linky