I agree with Fritomaster that expensive imported foods would not normally be called "high-end", and that "gourmet cheese" or "organic heritage artisan potatoes" would be used instead.

I'm not sure I would use "high-end" for top-quality antifreeze or gasoline, either -- instead we'd say "premium."

You can definitely use high-end not only for electronics, but also for furniture, carpeting, bicycles, automobiles, clothing -- it tends to imply "individually designed and hand-made by master craftsmen," as opposed to "mass-produced by machines." (In actual fact, a "high-end" item might be made by mass-produced by machines -- certainly so in the case of electronics -- but it's made with high-quality components and is "built to last". In the case of furniture or clothing, some of the sewing may actually have been done by hand.)

And as Deborski cautions, there may or may not be a real difference in the quality or durability of the product.