how etsy seller listing variation work. if I already have a quantity variation for my item, how do I remove the original quantity cuz now I have 2 different quantity when someone click into my item .when 1 item is $4.04, I offer them cheaper for 2 ($6.54) but someone could just not choose the variation and click the default button and buy two for $4.04*2=8.08, how can i remove the default button?