Need advice on printing - Illustrator, photoshop, indesign all printing wonky and I'm not savvy enou

Question

Hi all, I run a small greeting card shop on Etsy (4four.etsy.com) and currently all my designs are A1 (3.5" x 4.75") which I design in Illustrator, export as PDF, and print using Photoshop on my Epson R1900. Then I use the trim marks to cut each card down in size. two cards on a page means 13 cuts per page for two finished cards.
The business has been taking off recently and I'm starting to try and scale up to be able to handle large volume Wholesale business. I decided that the small A1 size was too labor intensive and I should size my designs up to A2 (4.25" x 5.5").
After laying out an old design in a new A2 sized template in Illustrator I'm having some printing problems. I need to print full bleed for about 33% of my designs, but when I print the image isn't landing properly. Out of Illustrator the image is shifted to the right by 3/32" but lands just fine on the 5.5" mark.
here's an imgur Gallery of the Illustrator prints: http://imgur.com/a/P1HtW
I decided to try and lay out a 2-up document in InDesign but the result was very strange indeed. Both the images landed just fine at the 5.5" mark but were zoomed out in a strange way. The same thing happened in Photoshop.
Here's an imgur gallery of the ID and PS attempts: http://imgur.com/a/FzYQ2
I suppose I could just move my design images to the left 3/32" in Illustrator and output that way (that's the only way this has worked so far) but that seems like a jury rigged workaround instead of solving the actual problem.
Can anyone tell me what I'm doing wrong? Thanks in advance for your help and not mocking me for being rather amateur in this.

Answer 1

Focus on getting 1-up centered on an 8.5x11 page setup.  Bleed or no bleed, add all of your trims and scores.  Save as PDF and use that.  Center the 4.25" x 5.5" inside a letter sized document.  For volume work, you should be getting these printed offset and professionally on decent paper.  Consider working with a local printer who you can easily talk to and get feedback on how to setup your files.