Seems like risky stuff that has minimal purpose as far as I can tell? I did the simple PTR tester shop id on a lvl 1 account and it requires the badge. I then found out that there was a packet spammer to get it but the packet doesn't work anymore. So is stuff like that the only purpose the shop ids have and does that mean there is no current purpose of shop ids?
Really it's just loading shops [and those in that area] that aren't there and sometimes still open rare shops that they don't close.
Not really anything risky, except if AE decides to track purchases or if the shop is a trap due to being rigged/opened by a lot of people.