Magento – Shipping cost only if order subtotal less than specific amount else free shipping for everyone including guest.

We did this recently with a sort of hackish use of the sales rule admin panel.

In your rule, under 'actions', in the panel 'Apply the rule only to cart items matching the following conditions', create a condition that can never actually occur. We used sku == 'invalid'. As long as you have selected 'Apply to Shipping Amount', it will take the discount only from the shipping costs. It will not match any items in the cart, though.

I think the issue here is the rule isn't applied on any items. You left the conditions empty.

If you wan´t to apply the rule without conditions just set a really generic one like price over 0 or something like that.

Now the rule should be applied to the quote