Although the official 4-tip kit (2H, H, HB, B) is difficult to find, Best Buy lists other related items:

: A similar kit that includes 3 tips (2H, HB, B), though this is also often listed as "no longer available" in new condition.

The is currently listed as no longer available in new condition at Best Buy . While you might find open-box or refurbished units, they are generally out of stock for new purchases. Surface Pen Tip Options at Best Buy

: For users with the Slim Pen 2, a 3-pack of matte black tips is typically available for roughly $22.49 - $29.99 . Where to Buy Locally (Moscow)