Prepaid Order configuration ( Discount & Promos )

[Purplechalk]

Hello, 

I'm looking to incentivize users who pre-pay for their orders. It can be a discount , free shipping , % offer or a freebie . 

Also enclosing a screen shot that I came across from one of the business using shopify . 

Can someone suggest me an app or a work around to achieve this ?

Thanks 

Subbu