Well, roll your sleeves up and make some bread (good for basic forearm development) and have a look at Ex pat supplies
where you can get Heinz Cream of Tomato soup, 900g for £1.10 and 4 different sizes of HP sauce. I tried a dummy run with two items in the basket and the shipping was £32.99
Soooooooooo - I think you may have a business opening there ...
I'll bring you one of each when I come over to Spain in the Spring.
Sorry, not much help really am I?