I cannot find any web resource for crowdsourced consumer prices - e.g. gas/petrol, water, electricity, and food basics like rice. I am aware of consumer indices such as http://www.fao.org/giews/pricetool/ but its spread for localised ('domestic' category) data (i.e. in towns and cities) is limited, so I'm wondering about crowdsourced data. Anyone aware of anything?