Changing product prices

I'm wondering if I can add some variables for orders. Right now we have a client that sells smoked, fresh and italian sausage. You can buy either 3lbs. or 6lbs. and I set the price to be $22 or $30 for each product. They want to make it where you buy 6 lbs of one kind or 3lbs of 2 kinds for $30 and then every package after that is $15 extra. It would have to be some kind of variable that checks what's in the cart and changes the pricing... Is that possible?

To accomplish the first part of charging $30 for 6lbs of one and 3lbs of another, you could add a product that costs $30 and then have 2 simple options to get the 6lb choice and the 3lb choice.

If you have eCart, you can edit the eCart object to add a discount to it. You would want to make it based on the Number of items with a specific column value and then check the ID for the ID that the product you added is and then set up the discount there.

Ok, so the three different types of sausage have ID's of 6,7, and 8. in the condition line "If the total number of items where id has a value of [the number goes here]" can I put 6-8 there or something that includes those three numbers?

I would recommend adding one discount for each of the products, so they work independently from each other and don't affect the discounts on the other products.

Maybe I'm confused or not communicating what I need. How do I apply a discount for each one when they're dependent on each other. If someone orders two of product with id "6" I need it to be the same as if they buy one of "6" and one of "7", or "7 & 8", or "6 & 8". So basically if they buy two or more of any of the products "6,7,8" I would like it to be $15 a piece... I need to have the cart recognize not their product ID but their group.

That makes things more clear. If you want to add a discount like this, you would add multiple triggers to the discount. You would have one trigger for total number of unique items in the cart is > 1, and then 3 more triggers for each of the products, and then change the separator to OR instead of AND, this will have the affect of applying the discount whenever there is at least 2 of the items added.

What is the calculation? The only one that I can see working is the "Based on the Quantity of an Item" but that would only discount one of the products...

Yes, you're right, the calculations would have to be set up for each product. You would have to set up a new discount for each of the products you want this discount added to.