Heyy!!
I saw your selca related msg. Tbh for my journal, i get these selca(s)/photocards printed out from an internet cafe in GLOSSY print in coloured format (3*3= 9 pictures each page)
Then I cut 'em up and woohoo!! You got ur Polaroids/photocards ready!!
(I actually don't know if ur main question was how to get these photocards printed or for a good printer but I don't have a printer myself so pardon if anything doesn't make sense~)