Last vacuum I got was couple years ago and needing to be replaced, that one cost just under $200. $600 to hopefully get at least 8 years, probably more, isn't that bad when you look at it.
My wife has been hedging on letting me pay a similar amount for a gas grill. We need a new one...but while she "gets" the concept of spending a bit more to get a much better quality that will last longer, she doesn't feel good about spending that much on something she doesn't personally use all that much. The other day I gave her the tour of the inside of our gas grill (all the thin metal parts which support the burners, etc. are deteriorated to the point of no return). I showed her at a Lowe's store the other night how the Weber gas grills are so differently constructed. She is now ready for me to pull the trigger.
While there are some here who don't like bagless vacuums, I am still of the opinion that our purchase of a Dyson a few years ago was one of the best purchases we ever made. AND...we got ours refurbished at a local vacuum shop for just $199. You can also find Dyson refurbs occasionally on Woot for a similar price. My daughter did and said it looked like a brand new vacuum when it arrived.