http://www.prokerala.com/health/beauty/skin-type-test.php

Hey guys from this website, I found out that my skin type is dry(don't know if its reli accurate though)

Statement from the website:
"Skin will feel flaky, dry, and tight.
Pores are almost unnoticeable.
After you wash your skin, you can feel it begging for moisture.
People with dry skin often deal with more surface wrinkles and fine lines then those with combination to oily skin due to dehydration.
Dry skin can easily develop a sallow tone, wrinkles, and fine pores, and it is very prone to aging and irritating.
Wash your face once or twice a day with a mild, anti-dehydrating cleanser.Dry your skin by dabbing it gently.Ently apply an emollient, hydrating skin care product to ease feelings of tightness and protect the skin against external attack.Avoid the overheated, confined atmosphere of apartments."

May I know what does the bolded means?
And which product should I get for the bolded ones?
What is the difference between cheap and expensive products on these?