The 20% weight increase changes very little in shipping cost.
For a 50 card submission:
BEFORE:
5 oz box
1.5 oz per card x 50 = 75 oz
5 pounds total
AFTER:
5 oz box
1.8 oz per card x 50 = 90 oz
6 pounds total
So an increase of 1 pound of weight for a 50 card submission. If shipping Ground USPS, you are using volumetric box size instead of weight anyways, so no change in price for return shipping from PSA. Unless PSA uses trash companies like Fedex or UPS.
For a single card shipment, the 1 oz bubble mailer and the new card weight is still under 4 oz, the lowest weight class for shipping first class bubble mailer anyways.
So, in summary, this changes nothing or very little. Don’t be afraid. Probably less chance of the slab cracking during shipment, so that is worth the extra weight.
Seriously though I am looking forward to holding one in person and seeing the differences. I don’t really know what medical grade plastic means in this case lol but good to see some evolution here since the cases are basically the same as they were in 1999 with minor enhancements
In an interview 9 months ago, Nat Turner said the new cases will cut down on scratching the card inside. People think graded slabs protect cards. But they are assuming the plastic is 100% smooth, when it’s not, it has valleys and bumps when looking at microscopic level
curious to see how scratch resistant it is. it feels bad sleeving slabs. if companies can figure out how to negate microscratches somehow short of moving to glass, i will be more interested in slabbing cards