buying an Exmark

I am going to buy an Exmark hopefully monday from wiseman in desoto TX. They only had m3613ka for 2129 and I really would prefer to have the HP, but the gentalman that was there would not let me demo and asked me to talk to the owner he did give me his card with the hours he would be there. I am a price shopper I will never spend to much, just whats fair as my prices are fair. Is there any way you could help me get the most out of my money. As far as speacial buys and incentives like the free mulch kit and any price breaks available. If needed please e-mail me. [email protected]
Thank You,
Rex