Contrarian opinion: I think we interpret "shopping questions" way too broadly, and close a lot of things that shouldn't be closed as a result. Consider this question, where the OP is asking how much it costs to get from Narita Airport to a point in greater Tokyo:
How much does it cost from Narita Airport to tsukuba?
This is actually an entirely sensible question, particularly given that both Google Maps and Rome2Rio give you terrible answers, so you need some local knowledge to answer it well. Yet it was closed as a shopping question, with these rationales:
Questions about the prices of specific goods and services are off-topic here, because they instantly go out of date.
No, not really. If a bus costs $10 today, odds are pretty high it'll cost $10 plus a bit of inflation (or, in Japan, deflation) 5 or 10 years from now.
Even if that was the case, technology moves so rapidly that the best shopping recommendations will be utterly obsolete within a year!
Consider the voluminous amount of information you need to even begin properly answering a shopping question: What is your budget? Where do you live? What are your preferences? Which alternatives will you consider? When do you want to buy?
Of those #2 and #5 are completely irrelevant, and #1, #3 and #5 are largely irrelevant. Yes, maybe the answer would be different if the OP would like to hitchhike or charter a helicopter, but there's an answer (take the bus) that will satisfy 99% of the answer's readers.