An example of something you should be prepared to spend more on would be your upholstered pieces. Obviously, you can score these on craigslist and ebay too, but if you can't find what you're looking for at a great price, you still can't go wrong viewing these as investment pieces. Most of us keep them long enough that we more than get our money's worth out of them.
There are, however, some things I just don't want to spend on and don't believe I should have to given deals that can be scored on the internet and at places like Home Goods. Here are a few examples:
This beautiful chandelier is currently available on horchow.com for $725 (not including the $57 for delivery and processing).
The chandelier below is currently available at overstock.com
I actually purchased the one from overstock for my home office and it's gorgeous. I would never ever pay $725 for this piece as it is a very specific trend and I don't know that it's going to stand the test of time like an upholstered piece would.
This pretty capiz shell pendant light is also on horchow.com for $695 (additional $45.00 delivery and processing).
The version below is available at target.com for $399.99 (free shipping). I still think that's too much for such a trendy piece, but at least it's a savings of $340 versus the Horchow version.
This one, also from Target,, can be had for $49.99.
Whether to spend or save is your call, but do yourself (and your bank account) a favor and at least spend a few minutes on the internet to be sure the same or similar item isn't available for a better price.
Happy bargain hunting!