Unfortunately that's a no...
Foiling is very different from our digital printing service, where we can offer one off sample prints. Each foil design requires magnesium plates to be made and the press expertly set for printing, massively increasing the cost. To print a one off design, you would be looking at a similar price to the cost of printing 50.
If you would like to have samples to show your customers you can order our Luxe Printing Sample Pack (just make sure you are logged into your wholesale account, or you won't be able to see it).
This pack contains a range of samples or our foiling, letterpress and digital printing services, plus our full foil colour range chart.