My first attempt accidently got erased. UGH!
Anyway, here's my opinion.
1) Materialistic is when someone enjoys or doesn't mind spending the extra money to have the finer things in life, whether it's cars, jewelry, handbags, or clothing... anything really. Maybe houses? I'd never say being materialistic is a negative thing. If you can do it... do it! The only people who call people materialistic and want to be mean about it are those who haven't been given the chance to be materialistic about anything.
2) I can openly admit that I am materialistic. It doesn't go to my head, I don't run around going, "haha, I got this and this". It just is what it is. I'm very self-sufficient and I fully pay for everything I have. It's my money, if I want nice things... so be it. As long as it's not ruining my life, I don't think it should be of anyone's concern. I'm not worried about it.
3) Low Maintenance can be many different things. Some women don't need very much affection, some can pay their own way, some just don't feel the need to buy anything extra for themselves, or maybe he wants someone "low maintenance" because he figures that none of his income will eventually be her's. It really depends on how each person defines it. I've never been called low maintenance before... or high maintenance really. I've had friends joke about it, whether they were serious or not, it doesn't really matter. It doesn't really bother me if someone says they want someone either high or low maintenance. If they're looking for something that specific, I'm sure it will be hard to find. Heck, it's probably hard to find a lady who doesn't want to be pampered!
Just my opinions... no one else was really jumping at the chance to reply to this one...