Oh I know what you mean.. it reverts to one.. it's auto.. don't worry about the top after you ordered.. see the bottom:
Aircraft: Engines: Qty: List Price: Downpayment: Total Cost (Including Markup):
Avro Canada C102 Jetliner Rolls-Royce Derwent 5/17 1 €34,209,727 €10,262,919 €34,209,727
You will be charged a total of €23,946,808 for this order. Each aircraft will take a total of 24 days to construct and deliver upon acceptance. This will only be listed for 6 months, before it is automatically cancelled and the deposit is returned.
Are you sure you wish to continue with this order?