Postage to me is the same as postage to PCGS, so that's a wash. Postage from me to PCGS is split up, so with a few submitters, it's very little. Postage back from me for a couple coins is significantly less than what postage back from PCGS is. Postage back from PCGS for 25 coins ($27) is only a few dollars more than postage back for 1 coin ($22), and the $10 handling fee gets split up. It's not necessarily a huge savings, but there is one.
And I point out as well that for a couple coins it is advantageous to me since I don’t have a submission account at PCGS.