Add punctuation: You buy 3 bottles of the testosterone supplement and get 2 bottles free plus a very informative EBook
A: You buy 3 bottles of the testosterone supplement and get 2 bottles free plus a very informative EBook.

Add punctuation: And Asa slept with his fathers and died in the one and fortieth year of his reign
A: And Asa slept with his fathers, and died in the one and fortieth year of his reign.

Add punctuation: This collection of sulfur from around the world consisted of over fifty specimens
A:
This collection of sulfur from around the world, consisted of over fifty specimens.