How to write correctly?

[Sergey]

"Today everyone sells something, and everyone buys something.
ebay is made for the purpose of making selling and buying much easier.
This is a place where it's easy to sell something, and easy to find what is necessary to buy."

Do I need "it's" here or can write just "is"?

Thanks!

[Susan]

Dear Sergey,

The word "it" is needed in this sentence.

All the best

Susan

[Sergey]

Thank you for a quick reply

[bordon_f]

Each English sentence requires a subject and a verb.