This seems to be the newest fad:  https://www.summerinfant.com/bornfree/bottlepreparation/bottlegenius.  There are a few variations - including one that has "mini-cups" of measured formula - sealed and ready to pop in like another brand of coffee maker I won't mentiom

I can't see spending any money for something like this. I do have a concern though - with all the issues RE powdered formula contamination - it seems that the warmth of the machine over a period of time would tend to keep the powder warm/cool/warm/cool plus the possibility of moisture leading to bacterial growth in an already non-sterile product. The temperature of 98 degrees is not hot enough to sterilize the powder/water - the CDC recommends a much hotter temperature. 

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