Can a " Wholesaler" be a crook with a contract?

[Carolyn Morales]

Should a wholesaler be considered shady if they are buying cheap off of mls and then doing a mark up to sell to another investor? What is reputable course of action for a wholesaler to earn and maintain trust of investor colleagues? I feel like a wholesaler who has done the leg work to acquire an off market property at a deep discount  should make a decent amount  of money for the time spent , but I have a problem with them paying Penny's on the dollar for an off market property and then trying to sell tt for near market value..

Any thoughts on the subject?