Yes! When building your project, You can select "Enable reward limit". From here, you'll be able to set a limit for your rewards as well as a time period for it's availability.
So if you want to offer 20 VIP seats to your film's premiere, for example, you can limit the reward to 20. As soon as 20 people back the VIP premiere reward tier, it will be marked as sold out and backers won't be able to select it.
With our itemization feature, you can also list the items available in your reward. Simply click the ‘Add an item’ link in your reward description and enter in the items available. Use the +/- buttons to specify the quantity of items being offered in a specific reward tier.