The short answer is YES. Kickstarter is intentionally geared around supporting creative projects NOT acting as a shopping cart. This means that you can only select 1 reward when you back a project. We have had a number of our backers want to purchase more than one knife and so we reached out to Kickstarter to find a solution.
Here’s fix we came up with together: Add up the value of all the rewards you want. So hypothetically if you wanted 2 PRO knives and 1 ELITE KNIFE the cost would be (2x) $119 + $179 = $417 (with US shipping). Then select one of the awards you wish to receive (the PRO knife for example) and when it prompts you to enter the amount you wish to pledge enter the total for all of the items ($417 in the case above). Lastly, let us know which rewards you wish to receive by sending us a quick message.
We know that this is a little more work, but we REALLY appreciate your enthusiasm and support!!! If you have any issues please reach out and I will personally walk you through it.