Shipping by quantity (but not per item)

[soydemadrid]

Hi I'm looking for help on how I could customised simplecartjs to offer two basic price brackets.

The standard flat rate as normal but a second shipping price for if the quantity of items is more than 10?

So if they order 1 item it is £5 shipping, if they order 8 items it is still £5 shipping. But if they order 10 or more items it is £7 shipping for example.

Thanks again for any help with this :)