Issue with product attributes

A site I'm working on now is for ordering various products such as banners, drink tickets, raffle tickets etc.

The issues that I'm having are related to prodct attributes and display price.

The banners are fine, because a user purchases one banner for $25.00 and if they want a second one it is still another $25.00.

For the drink tickets i'm running into some serious issues.

The base price for the drink tickets is $23.00 for 500 tickets. I need to be able to display the amount of tickets (500). No matter what I do, Zencart always multiplies the cost by the volume ($23x500) which is totally wrong.

Question 1) How can I fix this?

My second issue relates to the above issue. The cost of an additional 500 tickets are $3. If someone ordered 1000 tickets the cost would be $26 ($23 +3), if someone ordered 2500 tickets the cost would be $38 ($23 +3 +3 +3 +3).

Question 2) How do I add the additional purchases?

I've tried a number of things and each time Zencart wants to multiply the price by the volume.

Lastly, I figured I would take the easy way out and divide $23 by 500 ($0.046) and use that as the price. However Zencart threw me another loop and rounded the $0.046 up to $0.05 which shows an incorrect price.

So please help, at this point I'm confused and unsure what to do.

Thanks

As far as I can make out you are treating 1 x drink ticket @ 23 therefore if I purchase 500 I am getting charged 23 x 500.
If so then you need to treat a lot of 500 as 1 product.
Just enter a product "drinks tickets (book of 500)" with a price of 23.

As for reducing the prices, there is an option in the price matrix for setting 'buy 1 get another cheaper' but also you might want to look at a mod by 'that software guy'.
Either this, this or this one might help you out.