Very nice! I like your clowns too.
I can say with a lot of confidence that you will find blue or purple dots, (if you find any at all) under your anemone. You have a gigantea. If you ever see a mertensii in person there will be no doubt as to what it is.
The wholesale price on giganteas, especially small ones, is not very high (even blue ones). Most mom and pop LFSs simply do their normal markup. Your LFS marks up about double their price. That is on the low side of normal. Its when you get into the online stores or the stores that really pay attention to the trends, that you get the huge markups. They are dealing with a larger market and they know that someone will pay it.
I'm not sure if this is kosher, but the normal wholesale price for a large 9-10" blue gigantea at the place I was at, is $35. For some reason they bumped the price up a bit for this batch to $50 for a large and $60 for an XL.
Keep in mind that if you are a retailer and you order 5 or 6 giganteas, you may only be able to sell one of them, because they die before you can sell them. That tends to cause you to raise the price more than you normally would.