Sky, just my two cents for this. I have had the fortune to deal with you before, and know that you're both reputable and trustworthy. That said, there are a couple things that go through my mind.
1) Might want to offer shipping in a bubble mailer with tracking ($4, give or take). If I were buying a UD Griffey RC, I would expect and want better protection than a PWE - and don't get me wrong, I'm a big proponent of a well-packaged PWE, but not for a card like that.
2) With no feedback on your eBay profile, that method of shipping may do you some good as the seller to avoid the possibility of "it never arrived". With tracking, you get some protection that way. In just a PWE, it's the buyer's word against yours, and eBay generally sides with the buyer.
It's great to keep shipping costs down. There are too many out there who have not only unreasonable shipping costs for protection, but also to help alleviate eBay fees. However, when selling prices warrant it, it's good to consider an upgraded shipping option. Again, just my two cents. Good luck with the auction.
I'll never quit collecting entirely, but I am downsizing. Check out my COMC store and help me thin out what I don't want so I can buy cards that I do want. See something you like? Send me a message on here, and we can knock the price down quite a bit. I'll even take a bit of a loss if it means getting you a card you really want.
