whats complex about it? it cuts out a third of the organisations costs - supply. If your supplied with stolen goods, then you dont pay very much for your stock.
Thats why mobiles phones and things are nicked.
And i didnt say a that they would be supplying a regular order did i? you get a card through the door, it says we can sell you X, you order, get one box, then next week theyve done a bunk, and your local allotments have been cleared out. And it doesnt matter what was being grown, because its all 'seasonal'
Whats a box cost in a trendy, upmarket part of a city? £30? lets say you do 100 boxes, quite easy from what would be in a couple of standard plots, thats £3k for very little outgoing costs.
Dont think crimes dont happen if they take some organising! what matters is the potential profit. Making and selling counterfeit sportsware is very complex, but it happens, because theres money in it! Veg is trendy, so theres money in it!