Two-for-one deals that end up being more expensive than buying the items separately, bulk-buy offers that actually add up to a price rise, signs which advertise zero off the usual cost – shops are full of examples of bargains gone wrong. Since 2011, we've been asking readers to send in pictures of daft deals they’ve spotted while out on the high street – and the signs are that there are as many as ever.
Help us add to the collection, and name and shame the retailers who can’t do their sums. Our favourites will appear in the Saturday Money section and in the weekly Money Talks email.
To add your picture via GuardianWitness, click on the blue 'contribute' button. When you submit your photo, please let us know which shop you spotted the deal in.
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