Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
I bought this Salton yogurt maker on Amazon several years ago for about $15.  I have referred several people to the site to get one of their own after they see how well it works and how simple it is.  No buttons or dials except the reminder dial for the time you started the culture.  This weekend, a house guest once again was excited to see me making my own yogurt and once again I referred her to Amazon.  But now she says it costs $90.  I was dumbfounded and assumed they must had "upgraded" it with a microprocessor and fuzzy logic, and other bells and whistles.  But, no, it's exactly the same thing.  Talk about value pricing!  Maybe it's worth $90 to some people, especially if you use it every couple of days, but good grief!  I don't recommend paying that much for it.  I searched other stores online and found an even more amazing result:  online kitchen stores have it for $22-25, a reasonable increase over the many years since I bought mine, but Sears has the exact same unit for $139.95!  Seriously, what is up with that?

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: A: very positive