you cannot check out this product without adding a sticker to make the subtotal equal EXACTLY $150
this product and the sticker linked below are in their own shipping profile. the shipping profile only has a flat rate for for each zone with conditions based on minimum and maximum order price. minimum and maximum are set at $150 so the only way to get shipping rates with this product would be to have exactly one shoe and one sticker to your cart.
if a checkout/cart does not have a valid shipping rate, it cannot be checked out. this applies to humans and bots.
currently most bots do not have the ability to add more than one item to their cart to check out. conditions like this make it extremely difficult to automate since the bot would have to know the exact two products to cart at the same time.
