I heard that there's a higher risk of being caught as well if you AB in the magic shop and merifoods and get an MP or DE =/
I just let mine randomize. Do valentine's day items sell higher or lower on the actual date of VD? (Should I hold onto the cards and sell them on the 14th or sell them now?)
I personally hate speculation, so if I got said item, it would be in my shop immediately. I might not be as worried about being the LOWEST on the wiz, though :3