Aplaceinthesun via eBay offers the Mojito Collection Men's Guayabera Shirt in several colors (Black pictured) for $18.99 with free shipping. (Webzom via Amazon has it for the same with free shipping for Prime members.) That's the lowest price we could find by $6, although we saw it for $5 less in April. They're available in select sizes from S to 4XL.