After much searching and many phone calls and emails, I finally found a wholesaler here in Germany who sells to retail customers. I didn't manage to find anyone local like I had hoped, but I did find one that delivers nation-wide. They aren't organic, but I can't afford that anyway. I have €300 - €350 to spend on food a month and buying from the likes of Orkos and Tropenkost, there was no way to live on that amount of money and get enough calories. Supermarkets weren't really an option either as I live in a rural community and have no driving license. The village used to have a small store where I could at least buy bananas and some seasonal fruit, but they closed several months ago due to lack of business and since then it's gotten much harder to find affordable fruit and greens.
So I placed an order at this wholesaler earlier this week and this morning, my delivery arrived. I got 7kg papayas, 10kg bananas, 2kg passion fruit, 3kg tomatoes, 3 large watermelons, 4.5kg peaches, 15kg oranges and a few bags of baby spinach. One of the watermelons split (it was very ripe) and made a mess, but I was able to salvage most of it for lunch today. So far, very happy with my haul, except with the insane amount of packaging. I got a total of 9 large parcels and all the extra space was filled with some strange wood wool material. I have no idea what to do with that. At least that might be useable for compost, but there were also polystyrene plates for insulation lining the inside of each carton.