Amazon with Four Candie has the 6-Pack Four Candies Mechanical Pencil Set + 3 Erasers w/ 360 Lead Refills for $6.99 - 5% off with Subscribe & Save (can cancel at any time) = $6.29 with free shipping on $35+ or with Prime.

Includes three 0.5 mm mechanical pencils, three 0.7 mm mechanical pencils, three tubes of 0.5 mm lead refills, three tubes of 0.7 mm pencil lead, three erasers and nine cap eraser refills.