Other sites may concern themselves with exotica and luxury brands.
The Combo dates back to 1986 when Opel used the Kadett E (the aero one, before it became the Astra) as the basis. From the b-pillar back it was a large box. In 1992 Opel based the Combo on the Corsa B. Aft of the b-pillars was a large box. For the 2001-2011 version Opel went the whole hog and gave the car its own doors and a flush two-volume body.
This contrasted with the A and B versions where the cargo volume oblong did not blend smoothly to the body (not unlike the Ford Fiesta Courier). The Combo faced direct competition from the 2002 Ford Transit Connect, based on the Focus platform and, like Combo, designed to look like a bespoke body and not a crude modification.
While most Combos were used to deliver paint, pizzas and packages, Opel spotted demand for a more luxurious passenger version aimed at the leisure market, the Opel Combo Tourer Tramp:
This, presumably should have poached sales from the Renault Kangoo (related to the Clio) and Citroen Berlingo, a type of vehicle Opel had not direct answer to (why?).
The current Combo is but a rebadged Fiat Doblo and is made in Turkey.
A similar car to the Combo Tourer Tramp can be had for €1600 here. It’s the only yellow one I could find.