Is mentioning products price on affiliate website against TOS?
Yes, Mentioning the product price on Amazon Affiliate website is Against TOS.
One more thing some affiliate site builder doesn't know,
Be careful while writing Pillar content for keywords like "Best laptop under 200",
You have to choose the products under 200 only and link to that lowest price products on Amazon.
Check the product price on amazon regularly.
If you link to $250 price products from "Best laptop under 200" Article, Amazon takes it as you cheating or fooling the buyer.
Essential things to succeed and earn $400 to $800 per month from one affiliate website:
1. One or two Low competition Buyer Intent keywords(800+ USA searches Minimum)
Why high search volume keywords?
Once you reach the top position, you will get at least 70% of visits(560 visits by 800 searches keyword), here 40% to 50% viewers move to purchase the products on Amazon). If $3 is your commission for $50+ Products, then 224Purchase*$3commission= $672(is your monthly earning).
If you target 2 keywords, then your earning is $1344 minimum.
Earning will be more if we target a high search volume.
It is possible for only low competition keywords. That's why we offer low competition keywords to our clients.
You can try with low competition keywords. Work hard initially.