Wrong, when you post an order-proposal in PurseIO or Broker, you're putting a sale proposal, not a sell order, I mean, it's not a sell order in an exchange. When the buyer orders your items, it's basically an immediate-buy-order. So the last step is the one that matters, the person that confirms the transaction is in this case the buyer, as opposed with BitPay-based merchants (that convert immediately to fiat).