What happens to the phone call? How much does the retailer pay for each game?

A: Hello. North Seas Shipping. Can I help you?
B: Hello Could I speak to Amanada Collins, please?.
A: One moment please, I’ll just try her office. Hello. I’m afraid she’s in a meeting. Can I take a message?
B: It’s OK. I’ll try again this afternoon.

A: The games look interesting, but how much do they cost per unit?
B: The unit price is $8.
A: And are there any discounts on large orders?
B: We could give you a dollar off per unit on orders over 500 units.
A: Hm. Then I’ll just take 200 units to begin with.