Macy's offers the adidas Men's Originals Hand-Drawn Logo T-Shirt in Trefoil, The Brand or 3 Stripes for $11.93. Opt for in-store pickup to avoid the $10.95 shipping fee. That's the lowest price we could find by $18, excluding the mention below. It's available in sizes S to XXL.

Note: adidas via eBay offers it in Trefoil for $14.99.