Being Plain doesn't mean ensconcing yourself in agrarian isolation. Plain people are like everyone else: a deal is a deal. Now, frankly, I doubt you'd see many Amish people in Ikea. The furnishings there tilt heavily towards college dorms and a certain minimalist look.
And while the Amish definitely have a minimalist streak, I'm just not sure the Swedish style fits in with the decor of most Amish homes. But you can score good deals there. We needed a high chair for Aster and picked one up for $15. It's a great high chair.
Our sofa and our bed are from Ikea and those haven't held up quite as well over the years. German Baptists (as we know from reading Rosanna's column) tend to "get out there" more. Ikea isn't all furniture, either, their cafeteria is pretty tasty and reasonably priced and their kitchenwares section is pretty cool too. Most Ikea stores tend to be located away from Amish areas and are sprawling and huge.
I'd imagine many Amish might find Ikea a bit intimidating. I find Ikea a bit intimidating! Rachel and I live about 20 minutes away from one and I always try to steer clear of that store on weekends. It attracts people from all over and is almost always packed. Anyway, this German Baptist woman wasn't intimidated. Her presence at Ikea just shows how diverse the store's clientele is: from college kids to Plain people