Add punctuation: The one thing that matters is the effort Ade SaintExupery
A: The one thing that matters is the effort. A.de Saint-Exupery

Add punctuation: If a data flat rate is used no further costs are incurred
A: If a data flat rate is used, no further costs are incurred.

Add punctuation: Many people have contributed with knowledge insight and good ideas to our design philosophy and product line
A:
Many people have contributed with knowledge, insight and good ideas to our design philosophy and product line.