A Honolulu coffee shop is running a buy-one-get-one deal for National Coffee Day, good news for coffee drinkers in Waikiki looking for a cheap cup.

• Kona Coffee Purveyors at the International Marketplace is giving a free drink with every drink bought, until 4 p.m. today.
• Free tastings let people try each of the shop's 100% Kona coffees before buying.
• The beans come from the Greenwell family farms in Kona, and the day is framed as a thank-you to the pickers, farmers, and processors.
• A new in-store playlist mixes Hawaiian music with music from other coffee-growing places like Ethiopia and Yemen.

Outlook: Expect a busy day at the shop, with the most popular coffees likely to sell out early.