From ad responses it's mixed here. Sometimes no interest, then wow, they fly off the perches...
More often, they have no interest until they see them in person. Fairly often when they came for something else(I used to breed and sell peafowl), they end up taking a few NN also. Many became interested when I showed eggs, they were surprised at the size. These persons would never have responded to an ad for NN.....
Other times they became interested only after learning they need no special care. So many assumed they needed special shelter, sunblock applications etc.