End buyers first impressions?

[Laddie Batla]

I'm interested in doing the assignment of contract , just assigning the contract over to an End Buyer. I have two contracts to work with : assignment of contract and purchase and sales agreement. Correct me if i am wrong. I will approach the property owner with the Purchase and Sales Agreement, put up earnest money to secure the property. Do i approach my end buyer with the same Purchase and Sales Agreement before having him sign the Assignment of Contract. Knowing that he will see the original purchase price of the property without the mark up for my Fee. Would some buyers flip out on the mark up?Or is there a better way to approach the end buyer?