The quality of the product is incredible and support was very polite and quick to answer when I submitted any ticket. There were no problems with the shipment and everything arrived on time and well packaged. A small heads up is to know what you're working/dealing with, the printers print in CMYK and the product will obviously look a bit different from the computer screen. Always check and test before you submit your document and read whatever they need. I didn't had a tool to rely on, but it worked incredible anyways. Simple, if an unexperienced 18 year old can do it (me), then so can you if you read all instructions. I was sceptical at first, but judging by the finished product, I'm very satisfied. I might be biased since it's my first time, but the box kinda looks better than the boxes I see in the store.
Extra:
In general, always check for any extra delivery taxes/customs for your country, or else the bill might scare you if you order large quantities. I personally didn't do my homework, but I did expect a somewhat higher Tax since I'm located in Sweden. The product arrived in Top-notch quality so I strongly recommend this company for custom made Boxes (+ I think they would do just as well as gift-boxes if the design is good)