Offering X dollars above best offer not to exceed Y dollars

[Jassem A.]

Is there a better way to word such an offer? Would it make sense to employ this kind of offer strategy or will it be frowned upon? Would the seller's agent find a way to jump straight to Y anyway?

[Thomas S.]

 The art of negotiation is a art and needs to be learned to succeed. Your offer does not fall within my definition of negotiating and suggests you want the property more than you should. 

Your offer says this is what I will pay but I am willing to pay more - try me.

The message a offer should convey is - this is all your property is worth and all I am willing to pay.