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Speaking as somebody who eats literally dozens of thimbleberries a year, you're not selling them more than 5 feet from the bush. Forget "transport" unless you're renting fruiting bushes to restaurants that charge $20/berry. But the berries fall off at a touch when they're ripe, so forget "transport" altogether.

What climate/zone do they grow? Where can I get me some seeds?

USDA 3b is what I've generally seen sited. Mostly online, including Etsy, but it's much easier to grow by cuttings.

You're not growing a thimgleberry hydroponically.

Ok? Indoor growing doesn't by law have to be hydroponics.