A spokesperson for West End play Cock says “dynamic pricing” caused tickets to be priced at up to £400.
The show came under fire earlier this week after tickets were priced as high as £400, plus a £60 booking fee, on the production’s official booking system.
With the show’s 13-week run set to end on 4 June, a spokesperson for producers Elliot & Harper said “the remaining premium ticket sales are based on supply and demand”.
They also confirmed 15% of all tickets had been sold at £20, with a daily lottery offering £20 tickets at every performance.
Cock is being staged at the Ambassadors Theatre, one of the smallest venues in the West End.
On Wednesday, theatre consultant Carl Woodward noted tickets priced in excess of £300 on Monday were now priced below £200.