What is the most important thing when buying a new product?

quality

he value of the product or service and quality compared with a similar product

It depends on the customer perception .
If customer is Price conscious then Price will be more important for him.
If he is quality conscious then he will go for quality.
But in my point of view feature and quality is more important .

This will be defined by your target market.

the brand , are it useful for me or not , quality and the price

Quality , then the Price , unless one is financially compelled or obliged to go on the second criterion first .

Depends on your product positioning and target market.
When a target consumer's priority is quality, then to him/her quality is important.
But if a consumer is price conscious, regardless of the quality, as long as he/she can afford the price, he will buy the product.
Though the quality and price are equally important, when a consumer is satisfied with the service, then it is service that will top as important to him/her.

<p>value for the money........</p>