Upload & Sell: Off
Yes, you can upload designs you make yourself. When you actually create a new album for upload, it will ask you if you want to upload your own design or start from scratch. (might be slightly different WHEN they ask you this question, because they just revamped their website yesterday...so the layout is new to me.)
Anyways, their customer service is second to none. They stand by their products, and have been nothing but stellar in every dealing I've had with them. Yes, there is automation...but part of that includes viewing your layout WITH the time lines and centerline shown so that you can check (and should check) whether faces are cut in half, etc. You must actually view each page, with the trim lines and center line, and give it the ok before they will start processing your order for production. I have had them call me and tell me that I've had a face close to a centerline before...so I know it is not always completely automated. But, I do expect automation out of every album vendor to some degree. They just can't all look at every page of every album.
To give you an example, UPS one time screwed up on a critical Saturday delivery and I was left without a book to deliver that was a groom's wedding day present on the next day (Sunday). KISS opened up shop on Saturday and started making a duplicate book and was willing to drive 2 hours north to meet me and hand deliver. Seriously, where are you going to find customer service like that? (UPS ended up delivering the album late Saturday after all, but KISS still was willing to cover UPS' butt. AMAZING.)
Or how about the time KISS made a free album for a client of mine who discovered her fiancee was dying of Stage 4 colon cancer 4 months before their wedding?
I do love their products (more importantly, my clients love their products), but beyond that they make me feel solid that they will stand behind their work and make it right every time.