Trust
The only thing this product really sells is that you believe the number. So the rule is not “show a price”, it is: never let old information look current.
The four labels
Where prices come from
Till system
LIVERead directly from the venue’s POS. Minutes old, and it decays fast because its whole claim is that it is live.
The venue
VENUE VERIFIEDSet by the people who charge it. Decays slowly, because pubs do not reprice weekly.
A receipt
RECENTLY CONFIRMEDProof of what was actually paid. The strongest customer evidence there is.
A check-in photo
RECENTLY CONFIRMEDA photo of the drink, taken at the venue, with the coordinates to prove it.
A menu photo
RECENTLY CONFIRMEDWhat the board said. Right until the board changes.
The venue’s website
LAST SEENRead from a published menu. Often months out of date, and treated accordingly.
The rules
The tier comes from the source and the age directly. A heavily corroborated customer report is trustworthy, but it is still not a till feed, and calling it LIVE would be a lie however high the maths came out.
One credible contradiction dents confidence hard. If two people tell us different prices, that is the strongest possible signal something has moved, and it shows.
A venue can pay for a labelled placement. It cannot buy a position in the results, change a displayed price, or hide a cheaper competitor. Advertising sits beside the answer, never inside it.
A wrong or fraudulent submission is marked and held out, not erased. That is what makes it reversible, and what makes a price history exist at all.