Adding to the Best things already listed:
You can set your mark-up individually on a per listing basis. Unlike some other PODs where you can only choose a mark-up per product category (say for all t-shirts, or all pillows, or all prints etc), on Zazzle you can set it to what you want for each individual product published. So you could have 30 iPhoneXSupremeAXM10Superduper phone cases with different designs, and you could set a different mark-up ("royalty") for each and every one of them if you wanted to.
Adding to the Worst things already listed:
Customer returns/refunds come out of your earnings and there is no time limit on them. Sales "clear" for payment to you 30 days after ordered, but customers can still return/refund at any time so it's possible to get docked on earnings months after the sale. And because of the limited info we see in our earnings report, it can be really really difficult to pinpoint what was cancelled ("turned pink") when. All you can see at a glance is that your total earnings went down for some reason; you have to do some digging to figure out why.
The official return policy is here: https://www.zazzle.com/returns
But they will make exceptions outside of those time limits on a case-by-case basis. It may not happen a lot but it can and does happen. I once had a $20 referral I earned on Save-the-Dates go pink 8 months later.
Like I said, I don't think long-term returns happen often but I've seen enough comments in the forums over the years to know they can and do happen. Here's a post from August where someone said they had an order turn pink after two years. 😮
I am superstitious about counting my chickens before they hatch so when I get a nice order I am holding my breath until the 30 days have passed and it moves to Cleared/Current Available Balance. Even then some angst remains because I know it's still not 100% guaranteed, I could still end up losing the sale. Chances are slim but there's still a chance, thus why for me it's the biggest Negative.
