I can only offer concern, not congratulations.
What is your average order price? I ask because this is your highest income order but I’d be worried about the authenticity of the buyer if they’re spending a lot more than the average user does.
Does your gut trust them? Mine doesn’t and I always trust my gut instincts.
You must have heard the old saying: if something feels too good to be true, it probably is?
Don’t quit: not yet!
They could fire a charge back at Fiverr later and be your biggest nightmare.
You run the risk of getting the cash from Fiverr, spending it then finding out the buyer was dodgy and used a fraudulent card / hit you with a chargeback etc.
You’re protected against fraud here, but if it’s a service based chargeback you’re not, the forums are full of horror stories like that: buyer did this, I got no cash after days of work…
Where would you stand then? -$2,300 and if that was the case, how long would you have to work for free to restore you balance to $0?
How many $333 orders would it take to recoup those losses if the client hit you with a chargeback?
I do hope they’re not a scumbag and that this works out well for you!