Kickstarter will only allow you to pledge for each Reward once. So if you'd like to get multiple items offered at one Reward level, simple alter your pledge amount to 2x, 3x, etc. the original pledge amount.
For example: If you'd like 2 Initials, choose Reward Level #4 and increase your pledge to $78. Before fulfillment I'll get in touch about quantities and specific designs so you'll get exactly what you need.
If your desired Initial is not available for preorder yet, please pledge for an alternate Reward. Your support NOW will help me meet the Stretch Goals needed to unlock all the letters. Don't worry, you'll be able to adjust your Reward before the campaign ends!
The new Initials are being cast by a totally "green" company in Rhode Island vs. my local LA casters who I currently use for production of my Nature charms. The pledge for a single Initial charm reflects the difference in my costs to have produced, plus an extra level of hand polishing for the perfect finish.
Don't see the answer to your question? Ask the project creator directly.