AbleCommerce Shopping Cart Software

We are looking to implement a program for our customers in AC 7.0.4

Every customer depending on their volume has different pricing. We have resellers and then also different tiers of end user customers. Is there any ways to have different pricing groups of different pricing by customers? I know each product only has one price, and it isnt really set up this way so I am not quite sure what would be the best way to work it.

You can add volume discounts ( Marketing > Volume Discounts) for different groups of users.

You need to make use of pricing rules feature. Create user group for each section of your customer base and then for each product create a pricing rule for that group with special price. This way customer belonging to different user groups will see different prices according to their group.

I'm just working through discounts etc on Able now.
There is a pricing rule attached to each product which will allow you to give groups a special price to purchase that product at.
For example product "X" has a regular price of £12, but a special price for members of group "A" of £10
Volume discounts can then also be applied on top.
What I want to know is if there is a way to set a minimum spend for group "A" members before a discount is given.
Logically I would have thought that this would be defined at the point you set up a group, but I can only find a global setting for this in the admin configure store page.
Any suggestions?

Special pricing and volume discounts are two different things. I guess the functionality of setting minimum quantity for discount eligibility can be achieved just by using volume discounts. Have a look at following pages in merchant side
Administration > Marketing > Volume Discounts