sup guys, my parents are looking to do about 1000 sq ft of laminate flooring for our house. i've done some research online, but i would like any advice if any of you guys have had experience with it.

1) how much did you pay or should I expect to pay? any brands i should look for or be aware of?
2) buy it local at home depot/lowes (for a higher price) or order from internet sites (cheaper)
3) use planks with the cushioning mat already on it? or lay separate mat/film and then just the planks on top?
4) problems installing? good tips to make installation easier?
5) do you guys like it? self install or professional? (i'm probably going to do diy unless someone persuays me otherwise)

i think that's it, so chime away! thanks.