Cheap or expensive-is there a difference
That said, yes there is a difference in quality from one fixture to another. Many brass fixtures will tarnish in a short time, while others will stay good looking for many years. Since this is a new house, my advice is to go with quality -- if you can tell which is which. It's hard to do by looking at it, or by the price tag.
a. Quality reflector coatings and shapes (stamped, hydroformed or assembled?) means more light out of fixture, means more efficiency and fewer fixtures
b. Quality built transformers will not hum or buzz
c. Quality built housings will flush against a ceiling, and install faster, meaning that your installation labor drops. Quality housings will securely hold the lamp without vibration, meaning longer lamp life. They will not amplify transformer or filament noise into a room.
d. Buy the highest quality you can afford.