I have had a phone in my shopping cart at least 5 times, only to have it disappear. This is unacceptable.
Obviously not, since you keep trying to buy it (I'm not being glib; I mean this as a serious observation). As long as people keep trying to make them take their money, they have little incentive to fix it (but not no incentive, since it does damage the brand).
It certainly doesn't reflect well on them, though.
It is unacceptable because its Google, and the image that they want to convey as a trusted partner in financial transactions. Do they really think that I (or anybody else) should trust a company that exhibits this kind of attitude towards transactions with handling my mobile wallet? Not me.
Before it was available for purchase, I was on the fence about whether or not it was actually a worthwhile purchase for me. I ultimately decided it was, but Google did everything in their power to prevent me from giving them my money. Depending on how quickly they actually get new stock in, I will probably just end up deciding that I don't actually need the phone after all.
Disappointing.