[Plugin: Woo Commerce] How can manage discount with bigger items.

[Plugin: Woo Commerce] How can manage discount with more items.

Firstly I am sorry for this thread. I usually search and read for find solutions for my problems. But For this I couldn’t find because I an’t define my problem correctly.

I will try to explain with samples.

First. I want to make photo print service. people will send photo and will be print and send back them.

for example 1 photo print 13X18 size. 30 cent.

I want to make automatically after
20 photo 27 cent.
after 50 photo 25 cent
after 100 photo 23 cent. etc etc.

Second thing. I want to make discount for payment method. for example %2 or %3 discount or add this percent.

I have idea about this with coupon but for me it is not enough I guess.

again sorry for I didn’t know keywords for my problem ((