price always change for PC stuffs. Blame it on bad luck if the item suddenly change price.

Think of the opposite. If item suddenly increase price, can the seller call back buyer and say "Hey, price suddenly increase, not fair I sell you so cheap. Can I get back extra money for the increase?"

a very common problem is when customer trying to bargain. Usually even at lowyat plaza, people will gather prices and so on and then bargain.

Like example, I always buy at Cycom and I tell which shop sell what price and so on. If they can lower then they will. But if cannot lower, they usually will say they cannot give me that price cause their cost is higher and so on. Usually, I will get from them anyway due to their sales service if price is not too much different.

However, the usual sales people will say..really so cheap there? Then you better buy from there. This for me is not the right way to deal with customers. It's like saying we don't want your business. Usually, when I hear this kind of comment then I will not buy from these people anymore. Sometimes it's also something like they don't believe you. The think their price is already king. Customers say ABC shop selling cheaper...it's like a mockery to their pricing. I understand that maybe they really make very little profit but still the kind of response to ask customer go buy somewhere else is not the right reply. Even if customers say that, they should say that is their best price already. Really cannot lower anymore instead of trying to challenge the customer.