Is it possible to differentiate between monthly charges and one-time charges?

Is it possible to differentiate between monthly charges and one-time charges?

Hello.

I would like to know if s it possible to differentiate between recurring charges and one-time charges at at pricing table and sales order's list of products? 

We have the products and de services, so we have different ways of charge.  I need to show the values like: $5/month.

Further, I would like to know if you have any way to calculate the list price according to a % discount with no rules. Example: We have the unit price fixed, so we want to sell -15%  up to +15%. Is it possible?