I went for servicing a unit I had a problem with but the tech also said he does sales. It's a small store with demo models in the showroom. You just have to wait your turn depending in the number of patrons waiting. They have a very small staff to handle the walk ins. Bring patience and kindness and you shall be rewarded with the same.
I was there only once, but I did not see anything suggesting they sold products there.
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