Hang about. If they are sufficiently satisfied with the result that they have extended the period of the promotion then why would it be necessary to put on a price minimum.
If there is a payment method that puts 2D Boy out of pocket then they just need to say that paying by x method requires you to add y amount of money to your purchase if you intend to pay less than z amount. If $2 is the break even point then if some idiot wants to pay 50c then add $2 because of the pyment method they choose spending $2.50 then that's their lookout.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
