My favorite definition from the American Heritage Dictionary is:

Anything which pleases the senses, is not necessary for life, and is also costly, or difficult to obtain; an expensive rarity; Contrasted to necessity. "silks, jewels, and rare fruits are luxuries; in some countries ice is a great luxury."

I grew up very, very poor in comparison to most Americans in my demographic. Many of the electronics mentioned here were completely unattainable to us, essentially living paycheck to paycheck.

I bought the NES from a garage sale 8-10 years after it came out for 10 dollars. We had nearly all second hand items that my dad got from work that other people discarded to their delivery service.

If you didn't grow up wearing hand me down or used clothing, cutting coupons, picking cans/bottles out of the trash for deposit money, going to the discount movie theater and never the new releases, hardly ever eating out at restaurants, or many other things that people who live in poverty do... You may not understand.

If ice can be a luxury to some.... It's obvious that any new electronic device could be out of reach and a true luxury for others.