best place to buy a welding machine

im in the market for my first welding machine, and was wondering where some of you were finding the lowest price on good quality machines? i've checked with a few local dealers and noticed they're prices were alot higher than some of the machines i have seen on some of the online retailers websites, just not sure if i will run into warranty issues down the line. feedback?

Idiana Oxygen Company is pretty good. There are a few others online that are good too.