compared to Hamburg, Germany, pretty much everything of the day-to-day things is more expensive, actually.
Sure, the small SPAR-supermarket in Figueretas is not cheap, but even the Lidl in Figueretas/Ibiza town or that big supermarket on the right hand side at the road from Ibiza-town to St. Eulalia is more expensive than over here.
And that´s compared for same brands, same packaging.
Germany has pretty low cost for all that day to day stuff, especially food (meat, dairy products, bread etc), when I compare that to Italy, Austria or Croatia.