I would not complain about next-day shipping and very few people would complain. Next day shipping is the performance level any retail online sales business should strive to achieve. I don't know where you work, but two weeks is insanely SLOW, for a consumer item! I regularly purchase many similar items off Ebay, even from Asia, and my experiences have been very good there. Vendors that are slow to ship or don't meet their commitments receive negative feedback with notes to that effect.
The Ultimaker running average shipping estimator should be removed from the site. Even if the information is truthful, it's a running average and, as such, irrelevant when setting expectations for an individual customer's order and shipment, which is really all a customer cares about! Averages will begin a climb toward infinity, when shipping stops, due to a printer bill of materials item backorder for example. However, the running average estimator delays and obfuscates the disclosure of this sort of problem.
When I ordered, the running average said "4 days." Now it's up to 5 days and perhaps it's begun its climb "to infinity and beyond!" :( I'm at 6 working days (10 calendar days) now and have no idea when when I can expect shipment. Certainly the running average estimator provides no insight, except that it's increasing and that can't be good!