What's the size and cost of a loaf of white or wheat (brown) bread in parts of Europe?
Price in Brno, CZ at a major Euro supermarket chain can range from around $0.50 to $1.25 USD. This is for in-store baked, not a specialty bread, and not pre-packaged baked elsewhere (which aren't so common here).
In London, commercial brands (Hovis, Warbutons) go for between 70-90 pence for a small loaf (400gms) and £1.20- £1.50 for a large loaf (800gms).
I've seen supermarket own-brand sliced loaves for around £1, and gourmet, artisany types (sour-dough, hand-kneaded by blind nuns, topped with saffron and gold etc etc) for up to £5.
It's a lot like the price of bread in the US -- it all depends on where it's made (bakery-baked or industrial), what brand (store-brand or national brand), what type of bread, and where you buy it (Aldi and Lidl are cheaper than 'regular' groceries)
You'd be unable to find anything quite like Nature's Own anywhere in Europe that I've ever traveled. (NO is a US-only brand, but Europeans tend to not like that style of bread)
There is no united states of Europe. Every country has its own prices, sizes and types of bread.
May I ask why you have asked this question?
The type of product you sent a picture of, would not be considered bread in cities like Rome or Vienna eg. There you woud buy a handmade, baked on site loaf, or half of it, and have it weighed. At my bakery here in Rome - Passi in Testacio - a full loaf might sell for 5 to 6 euro, and weigh up to 1,30 kilo. In Vienna bread freaks cue at Josephs for a full sour dough loaf at 6,20 euro for almost 2 kilo.
Different cultures really.