Is Drupal a viable solution for my website?

I'm looking for feedback / advice or even someone to point me in a direction / solution, if this is possible to achieve using drupal.

I have been reading / looking into the e-commerce module for drupal but everywhere I have read / look, I have not been able to find a solution for something I thought would be an ideal feature in e-commerce.

I believe the site I got the idea from is a custom built solution, as I use a firefox extension that detects if a cms is in use and none was found (http://www.signet.net.au/Category/Tapes-Adhesives/3M-Packaging-Tape-Hand...).

What I am wondering is, can i use drupal with modules added, to create a product main, with a product sub that displays items like the above link shows, with different quantity breaks?

I understand u can do variations of products say like t-shirts, colours and sizes and add a surcharge, but that would not work for the above as each cost prices would be different.

Also the above if they only have each, they will only show the each price, and if they have just each and bulk, they only show those two fields in the table.

You can also, add quantities into each textfield and it will add all items with a quantity into the shopping cart.

The simple answer I would be looking for, can drupal do this at its present state? Or would I have to build a module?

Help in advance is always appreciated.