Did you ask him how he thought it would compare to what you have and what you are looking to improve with a switch? If you are just in the auditioning stage, he isn't in business to audition that brand. If it a great deal, he probably thinks it will sell easily for the price he is asking and the service he offers with the sale for that price is not the same as a brand he carries.
Even if it is a great deal, how do you know you will like it better than what you have? I have spoken to The Music Room when I saw a "great deal" on some close out speakers and since I knew about their try and return policy, I gave them a call.
After a quick conversation asking what I had and what I was looking for, he said I might not like these as much. I appreciated the honesty. I would have had to pay shipping charges which would have probably been $500 if I didn't keep them. I passed. Once I did buy a tonearm with the 100% money back guarantee because the dealer knew it was a dramatic improvement and I would like it. He as local so there was no shipping inbvolved but he did set up the arm with my existing cartridge so there was some investment on his part. One of the best improvements I ever made.