I put my merchs quite high on my priorities, just under actual comic & Patreon.
Each item comes in a chain of series, slowly added by story progression. (have to be patient though)
For quality assurance I bought some and inspect to make sure the colors are okay (tweak the color/brightness to try compensating the prints). Verdict: I highly recommend the 5"x7" postcards-- my featured color arts + accurate tone + great print fineness + cheapest !
I only dislike that the colors are a bit dull on the pins (& so-so print fineness). I didn't buy the sticker yet. (what you see the pin design is an earlier version)
Link to my MAOR MERCH store down below.
Also, merchs have exclusive discounts from 15%~25% -- for patrons only.