Amazon has the 31-Piece Elead Hex Key Allen Wrench Set (SAE & Metric) for $12 with free shipping on $35+ or with Prime.

• 41-Piece Hex Key Allen Wrench Set for $19
• 13-Piece Jumbo Torx Key Wrench Set for $17
• 27-Piece Metric & SAE Size Allen Key Set for $12
• 13-Piece Jumbo Hex Key Allen Wrench Set (SAE) for $42
• 13-Piece Jumbo Hex Key Allen Wrench Set (Metric) for $42