Product Option Price Ranges? Possible?

Is there anyway to add a price range to the product options? For example, if I have business cards as a product and want to offer round cornering... as it stands I can add round cornering as an option. But if they order 5000 instead of 500.. well, my price needs to grow accordingly. Would be great to be able to say 500:$5.00, 1000:$10.00, 2000:$15.00.. etc

Anyone have any idea how that could be possible?

Percentages would also work.. ie, if base price is $20.00 for 500 cards, round cornering could be +20%. That way if they choose to increase the quantity to 1000 with a new price of $30, the round cornering option would increase as well.

My Uber Options mod supports percentage based prices, just like you described

Set the product price to 100
option 10ft (10% of base)
option 20ft ( 20% of base)
option 30ft ( 30% of base)

etc

Thanks for the quick reply Qphoria. That does sound like it might work for me. My concern though is does it support percentages that can be dependent upon other options. Example:

Flyers - default price is based upon say a 8.5 x 5.5 and qty of 500 for $165.00. So if I added folding as an option for 15%, it would be an additional $24.75.

But now they want an 8.5 x 11, which has a base price of $187.50 at 500, but they also bumped the quantity to 2000, base price of $317.50. Now when they add folding is it 15% of $165.00 ($24.75) or 15% of the new base price of $317.50 ($47.625)?

Just for that one option I would be losing nearly $23.00. Add in paper stock, coating, 3 hole drilling, wrapping, turn around time, etc... leaving a lot of money on the table.

Also of note in the above example.. only size and quantity should affect the base price. It wouldn't cost me more to score and fold a flyer that has also been 3 hole drilled for example. Those options are independent of each other.