I kanow I would be pi$$$df I paid 700$ for what the next guy paid 600$ for.
What happens if he sells it to you for cheap and you go out and tell people the price you paid. They would all go into the shop expecting a cheap price. Finding out they couldn't get it for what you paid for it they would never go back. Maybe make a deal with the guy that you'll buy the bow if he throw's in the site.