Punter takes cash-out to win at least 250k on Marsh Novices' Chase

It's been the story of this year's Cheltenham Festival so far. One punter's gargantuan bet which needed just Envoi Allen to win the Marsh Novices' Chase on Day 3 to scoop him £511,225 from a fiver.
After both Shishkin and Bob Olinger romped to victory on Day One and Two respectively, punter Paul Dean was offered £275,000 by Betfair to cash-out his bet and walk away with a huge amount of profit, with Hello Youmzain and Golden Horde previously winning their respective races at Ascot last summer.
🤔 Take a £275,000 cash out offer? Or let an extraordinary £500k acca ride?
That's the dilemma facing @istabraq_king with Envoi Allen 4/9 to win Thursday's first race at Cheltenham.
What would you do?
#CheltenhamWithBetfair
Indeed, with almost double that on offer and Envoi Allen - the final horse to run in this stunning ante-post acca, placed back in early 2020 - huge favourite to win the opening race of Day 3, the deal was refused and talks between the customer and bookmaker Betfair continued.
And this morning, it's been confirmed that Mr. Dean will take a partial cash-out of £322,000 if Envoi Allen - now odds-on favourite at 4/9 - wins the Marsh Novices' Hurdle, but if he loses he will still walk away with £250,000.
Congratulations in order for Paul, as he walks away with a huge amount of profit regardless.
What would you have done? Let us know by Tweeting us @BettingOddsUk!
Winners so far
Golden Horde (12/1) - Won Commonwealth Cup, Ascot, 19 June 2020
Hello Youmzain (10/1) - Won Diamond Jubilee Stakes, Ascot, 20 June 2020
Shishkin (4/1) Won Arkle Chase, Cheltenham, 16 March 2021
Bob Olinger (25/1) Won Ballymore Novices' Hurdle, Cheltenham, 17 March 2021
Read TwoPoundPunt's Cheltenham Festival Day 3 tips right here
So after celebrations last night, 4 hours sleep, an hours walk at 5am I've decided to take a partial cash out offer of 300 Envoi / 250 the field. With other bets my position on the race is £322,000 Envoi or £250,000 the field. Thanks to @BetfairBarry @Betfair # ComeOnEnvoi! 🥰