Although supply and demand are the two factors that ultimately influence the standing of the price of goods in each area/country, there is another big factor that we should always be on the lookout and that is individuals who have the money and influence to manipulate the market. Market manipulation happens all the time and everywhere (in fact there is a more thorough discussion about this in a different post if you want more insights about it:https://bitcointalk.org/index.php?topic=5465009.0). Additionally, market manipulation can be done by different individuals or organizations such as big companies, wealthy and influential business individuals, and the government. Naturally, the main reason why they do so is due to the benefits market manipulation gives to them such as a rise in profit and sales. As to how we will be able to reduce the price of goods, the answer might lie on the government as they have a good hold on market manipulation.