Options to sell an item that one does not have stock of
Q: I am selling physical products on an online website. I had one product in stock, but got two orders for that product. Now, I have two options:
1. Manufacture the extra product to fulfill both my customers orders.
2. Buy the extra product from elsewhere and then get it shipped to my customer.
Are these options halaal? I know that dropshipping is not allowed Islamically as the seller does not own the product at the time of the sale, that is why I want clarification.