I'm going to weigh in here as someone who deals with eCommerce / Online Retail order management for a living. Just to give you all a little background, the company that I work for specializes in online order management for personal web stores for companies like SaberForge (SaberForge is NOT one of our clients, but I'm just using them as an example) who are their own company brand who fulfill their own orders. My company also specializes in translating orders from a larger online retailer, lets say Amazon, to their third party vendors warehouses for fulfillment.
Now that I've listed my credentials, let's discuss the topic of automation. Once an order exists in a shipping facility's internal order / inventory system it is actually quite simple to automate the creation of shipping labels. Major carriers such as UPS and FedEx have specifically designed software that allows for this if a shipping facility's internal system is not built to generate it's own shipping labels via a carrier's API.
However, the part where things can get a bit gritty is being able to easily import orders from an outside source (such as Etsy, Kickstarter, and IndieGogo) efficiently. Each and every outside company has their own way of managing order information, and different rules on whether or not they will integrate best on certain industry EDI (Electronic Data Interchange) standards. Some even disregard these standards all together. My company has had retailers only able to transmit orders to a warehouse via the body of an email instead of a usable file format, but it is possible to translate that email body into a readable order at the warehouse with the right technical setup but this can be very daunting and expensive to do in house requiring the employment of a specific team just to manage that one area of the company. The main problem you run into with Kickstarter and IndieGogo is that they do not capture the customized details of each perk type at the time that the backer pledges their order. They see each perk as a single product with no variations. This is why we all received an email from Saberforge after the fact asking us to fill in a form with our custom parts lists.
I'm assuming some poor soul at SaberForge (most likely Melissa...) is then manually processing each and every one of the thousands of emails containing parts lists into some type of order format that is usable by sabersmiths and people packing each order. Because of this process, I don't see how they could have had an overview of the total number of parts with varying finishes that they needed from the very beginning, which could translate to trouble with available inventory and explain why they need to jump around in the order queue so that things end up shipping out at what seems to be a random way and making it difficult to gauge when a particular person's order will be ready if they need to manufacture / order more parts.
Of course, this is all speculation since I have not spoken to anyone directly at SaberForge about this, but it's just my two cents based on what I know about the eCommerce / Online Retail industry.
Sorry if this takes us off topic, but hope the information is useful somehow...