I smell sarcasm in the air!
At the basic level, the price of anything that is tradable (having a buyer & a seller) in the open market is solely dependent on supply and demand.
Example 1:
A 2 year old Maruti Swift diesel might sell for Rs. 5 Lacs, but a 2 year old Tata Indica Vista diesel might sell for Rs. 3 Lacs, eventhough both had the same on-road price when they were new.
Now you can explain this phenomenon the traditional way - that is, Marutis are more reliable, better service, better build quality etc etc - and hence has a better resale value.
Or you could explain in simple economics - there simply is more demand for Maruti Swift in the used car markets. If the demand for Tata Vista is more than it is right now, would it trade at Rs. 3 Lacs? Absolutely not. Because the seller will quote more.
Example 2:
Infosys option prices are unusually high during the quarterly results. You can go on and on about implied volatility being high or you can look at the past data and say that the price moves up/down significant after the results are announced.
OR
It can be explained with basic supply/demand concept. There is simply too much demand for stangles/straddles from option buyers during results. When there is too much demand from option buyers, basic economics demands that prices have to go UP. Option sellers will step in only at a particular price.
Example 3:
During the last week of expiry, all options that are out of money start losing value rapidly. You can explain that the traditional way - time decay/delta etc etc.
OR
You can explain in the supply/demand way. When the option buyers know that a particular option strike price has lower and lower probability of earning money, demand for such options will be low. The only way the option sellers can SELL is by quoting lower prices.
For somebody who is new to options, this is perhaps the easiest concept to understand how prices work.