I was told the usual delivery time was between 1 and 48 hours. When I had been waiting for 72 hours I sent them an e-mail and I got this answer:
"I would like to start by saying how sorry I am for the unacceptable delay in delivering the currency. I don't want to raise false expectations by giving a precise delivery timeframe, which is what the competition usually does. Your business is important to us. Please give us one more opportunity to meet our commitment to you. I've also pushed it to the top queue so that when supply becomes available, it goes to your order first."
It's been another 24 hours and I'm still waiting...