In all transactions- buying, selling, or exchanging labour for money- both sides of the agreement have to see a beneficial deal. You feel that the iPhone 27 is worth however much money, and the store selling you feels that the money is worth giving you the iPhone. If either side does not agree, there is no sale.
"Plenty of available jobs" is what happens when the deal you are offering- cash for labour- is not an acceptable deal to the labour side. When businesses cannot be profitable at market-chosen labour prices, the businesses will close down.