Derbyshire police intercepted rogue roofers near Chesterfield after they ramped up their price by an eye-watering 2,300%
Police say two men initially quoted a price of £45 to repair a roof for an elderly female resident.
But having completed the work, their bill shot-up to £1,100.
Officers were alerted and a van was stopped on the A617 near Temple Normanton.
The two occupants of the vehicle have been charged with fraud.
Their vehicle was also seized.
If you think you may have been a victim of fraud you can report it to Action Fraud any time of the day or night using our online fraud reporting tool. You can also report and get advice about fraud or cyber crime by calling 0300 123 2040.