Before you start

I want to know, is there any method using which I can set multiple payments based on the quantity of the product.
Here is an example
Suppose 1-5 $20 / product, 5-10 $18 / product and 10 or more $15 / product.

Your help would be much appreciated.

Hi

I want to make a simple review website of courses at my university. I am considering using Drupal and would like to know how I can do it using Drupal.

What I have:

Hi. I need to create a website for an organization that handles virtual events, like an online version of real conferences or fairs. The website is structured around virtual spaces which can be:

Fair lobby (which can contain one or more pavilions )

>Pavilions (each pavilion can have one or more virtual rooms below)

>>>virtual stands

>>>auditoriums

>>>Lounge rooms

if i try to send a register email to new users, the system send this error:

Notice: Undefined index: Return-Path in DefaultMailSystem->mail() (line 101 of ...\xampp\htdocs\modules\system\system.mail.inc).

Hey! My name is Amir, I'm new to Drupal and I'm trying to create an ecommerce site but I have absolutely no idea what to do. I believe to create any website you need a domain, a web host, and a SSL to secure customers info. Can someone please tell me everything that's needed to create an E-commerce site. I believe you'll need something like a label to add to your shipments. Thanks. - Amir.

I'm creating a directory site - basically a yelp like site. I'm having problems in terms of what modules to use to lay out my site. I want to find out more about best practices. This is what my thought process is and would appreciate any feed back, advice, thoughts.