"Alright Esteban, I'll take these nails and... two car batteries, if you've got 'em," Anna told the shopkeeper, and while handing him the money politely said, "Thanks again."
"Hmph. Do it for me."
"You'd do better to find what you need yourself," Anna informed the youth, "He doesn't know what you want anyway."
Starting to walk back to where Lari was browsing, Anna turned and murmured one last thing: "You'll wanna watch your manners out here. This arid climate tends to make people... quick-tempered."
"Hey Lari! Need help carrying anything?" Anna called to her new friend still browsing the engines.