When private users have to choose new windows, they often consider commercial factors only. In other words, they enquire about the price. But the essential information to be considered before choosing is much more, and ignoring some factors fatally causes additional costs.
Choosing the wrong supplier quickly turns into an increase in cost, damage and problems that the end users must then be able to solve on their own. That’s why many customers decide to take one more step, taking into consideration not only the cost, but also the quality/price ratio.
How can we compare two variables that have two different units of measurement? We know the unit of measurement of the price, in our case it is Euro.