Around 600,000 people visited the market in 2018.
The figures have been released by Exeter Catherdral, which has run the market since 2017.
It takes into account accommodation, shopping, transport and eating cost of those who visit the market during the month it's open, in the run up to Christmas.
Raw sewage pours into landmark Devon river
Storm overflows gush into waterway for 40 per cent of year
Work underway to return shingle to East Devon beach
Bulldozer in action for Storm Goretti clean up
Car park fees increase at Devon beauty spot
Northam Burrows season ticket to rise
Tank shell shut downs recycling centre
No one was hurt
Exeter's Royal Clarence hotel to be restored
'Progress is moving fast'
