Products from Subsidiaries in My Own E-Commerce Store

[Doomi]

Hello,

I’m currently playing through a game with many subsidiaries operating in various industries. I’m focusing on banks, insurance companies, and internet firms, and I don’t manufacture any products myself.
Now I’d also like to run an e-commerce store.
What’s the best way to do this so I can sell all the subsidiaries’ products without manufacturing any products myself?

I’ve tried using warehouses with a “purchase-warehouse-sale” model and set up the e-commerce platform.

That doesn’t really work very well, since the purchase prices are sometimes higher than the required retail price in the online store.

I can’t imagine there isn’t a good solution for this—what am I doing wrong? I just don’t want each subsidiary to have a mediocre e-commerce site; I want a good one for the group.

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