"I am very satisfied with the services offered by VenusPuzzle. Customer support is on point. They can check your photos and tell you if the picture quality is good enough and offer some tips.
The puzzles come in pretty sturdy packaging, the puzzle box itself is really nice. Picture quality is good.
The only thing to mention is that the final product turns out a bit darker than the original image, so make sure the image you want to turn into a puzzle is not already dark, or you could adjust the brightness beforehand.
Also, shipping to a "lockbox" is great as you can increase the storage time by 2 weeks if you can't get it in time."