Sacramento will be losing more than the most eclectic greeting card shop in town when Etc. closes next week. The city is also losing a one-of-a-kind neighborhood gathering spot. Owners Jeff Heald and Abdon Legrand — with help from a glittery, life-size chrome man standing sentry outside the shop — have welcomed shoppers and passersby to the corner of 21st and L streets for two decades. The pair are closing their shop — previously known as Postcards Etc. — and moving to Mexico. They plan to open a new business: Café Como No (Cafe Why Not) in Punta de Mita, near Puerto Vallarta, said Heald, 57. Heald grew up in the Sacramento area. However, 47-year-old Legrand grew up on the Gulf of Mexic