Please add the ability to make options and variations for one buy button (like the original paypal smart add to cart button) so that we can make one button and have multiple options and prices for each option, for example;

If selling T-shirts, enable a dropdown menu where one can select their size, color, etc...

Another example for digital files, if selling the same product but selling multiple licenses such as a standard license and premium license with a low price and higher price respectively.