Agreed, in all respects; that’s exactly what I meant by the cons of this program.
For the account I use to post, we have a Variation Relationship Set, based upon a Color-Size Theme, which includes 7 child ASINs; the packaging is one of our proprietary poly bags.
One of the children was auto-enrolled as “Certified” on 28May2022; a second suffered the same fate on 12Jun2023 - both @ a saving of 7¢ per unit.
None of the other 5 children have yet to be so-“Certified” as SIOP/SIOC/SIPP; I’ve formerly been inclined to think that such as a result might have had some roots in the fact that I presented a well-laid case demonstrating how the Returns Rate % for those 2 auto-enrolled ASINs had spiked above the historical norm of many, many years once they were enrolled - despite splurging on the additional cost of a more-robust mil thickness for said packaging right from the get-go, we had no inkling that Amazon would decide that a poly-bagged product could withstand shipping & handling processes on the carrier’s end.
We were wrong - mayhaps because of what is implied in the SHC’s How to test packaging and record results for Ships in Product Packaging (SIPP) certification (link, Seller Central Help Content), but perhaps more-likely attributable to Amazon’s MBA Revolution-educated never-ending attempts to wring blood from a turnip.
Good job - I submitted this as Feedback for the “Rate this page” mechanism on the Ships in Product Packaging (link, Seller Central) Dashboard early this morning:
'Tis not often that I sue the ‘lowest frown’ when I engage this or that “Rate this page” mechanism - but I didn’t hesitate in the slightest to do so here.