The bad thing is that venders will have to wait for payments for a long time and small companies will have to keep the most of the funds in account receivable. And thats bad for business development because they need every penny.
This is not going to happen on Hamster whatsoever. It usually happens on a big marketplaces. Manufacturer will receive the money right after goods delivery is confirmed by the client. Theres no need to wait. All the transactions are done simultaneously.