Store auditioning and then buying on-line from others. How do you feel about it ?

Guess inna maybe you should simply ask yourself how you'd feel if you were the dealer and people did it to you. Or, just consider in general , do you like getting jerked around

I would never go to a dealer that I hadn’t done any business with to listen to something with the sole purpose of buying it online.  At a minimum I would give them a chance to make a deal. 

If if it was more of a big box store where I wasn’t requiring any special effort by a salesman then I wouldn’t feel as strongly about it. 

I dont think it is necessary to overpay by a large margin just to support a local store but sometimes giving them something for their time can easily equate to paying a little more for the product. 

One of my local shops led me to my Yaqin tube amplifier and not only sold it for me at the online price they set it up for me.  I don’t think they made anything on the deal beyond good will which they are very good at.  I have purchased a few things from them since and recommend them a lot.  I would pay more from them. 

One gets what one pays for.

Just don’t plan to request warranty work from that dealer whom you screwed over by auditioning gear with them and then ended up buying the same gear elsewhere or online.  

What comes around goes around. Karma screws those who screws others. 

Karma screws everyone in different ways. No escape.

Dealers can be helpful. After I bought a pair of Magnepan 20.7 locally (and had bought 3.6 from the same dealer 8 years earlier)He was blunt and told me 'You don't need a new amp'.(He had also sold me my amp 8 years ago)                            
And later he offered to let me borrow a Marantz SA-10 for a week.No hassle. I used it ...liked it ... and used the money i probably would have spent on a new amp, on the Marantz SA-10.  So good Karma I guess.