Okay, here's my update.
I received the pearls from China (eBay seller jewellerywork). They were listed as AAA 7-8mm round.
They are really pretty, very smooth surfaces without any noticeable flaws. The two strands I received were graduated from smaller at the ends to larger in the center. The seller said this is the usual way that they are sold.
My only real concern is the shape. They are not 100% round. I am wondering what grade these pearls are in actuality. I understand that there are pearls that are "round to the eye," but so slightly off-round that it can only be determined using some sort of measuring device. These pearls are "round to the eye," but I can see that they aren't entirely round if I hold the strands in my hands and study them pretty closely.
Anyway, I'm happy with my pearls. I paid $69 per strand plus $10 total for shipping. I think this is a good price. Also, the seller was very responsive. I asked a lot of questions, and in fact, he only listed this item in response to my request.
That's all I can think of.
Nicole