1. Colors are wrong for Tahitians
2. too small for Tahitians
3. glossy sort of finish-- not pearl-looking
4. Not dyed freshwaters either, too long ago for that shape
5. Not typical color for dyed akoyas
It sounds to me like the owner consigned them with a local jeweler, who may or may not succeed in selling them at that price. If the seller tehn drops the price the OP may be able to get them to get them for less.
Did I get that right?
The necklace appears to be to be a very pretty strand of akoya pearls, well matched and lustrous. It's hard to say from the photos if the earrings are also akoya as many ladies buy imitation pearl earrings, but if there is a metal mark indicating they are karat gold then they are likely akoyas...
Is that the one you love most, or is it just the most affordable one, being the lowest priced one on that page?
This matters.
In my experience one should get what one most wants, or save for it. Otherwise it will be the one to replace.
That is exactly why I got all three of my vintage consigned akoya strands so cheaply.
They were unattractively dull from the patina of grime and were priced low, but they cleaned up beautifully. Then they just needed to be restrung.