Instacart shopper Jayme Romero checks her iPhone to get the list of what the customer wants to purchase at Whole Foods on Monday morning, Sept. 8, 2014. Customers will be able to try out the new Instacart service. Whole Foods will pilot the in-store pickup option at select Austin and Boston stores in the next month. Already, Instacart delivers from Whole Foods Market in 15 cities (Atlanta; Austin; Boston; Boulder; Chicago; Denver; Houston; Los Angeles; New York City; Philadelphia; Portland, Oregon; San Francisco; San Jose; Seattle and Washington, DC).