Cost of Living & Smart Shopping ·
WD-40 at Costco: Save on the 3-Pack, or Split It on eolma
A September 2026 price check at Costco Westgate and Bunnings Westgate shows how much you can save buying WD-40 in bulk. Costco’s 3-pack costs $26.99, compared with $15.98 for a single 330 mL bottle at Bunnings. If three bottles are more than you need, eolma lets you split the bulk purchase with other shoppers.
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