ya, its very expensive but it is worth if you are really wanted to protect your investment. If your location has no problem of current or voltage fluctuation, no problem having a lower end AVR otherwise you have to have this. This is a very precision AVR, very stable. I use this for our very very very expensive installation of state of the art technology nowadays.
If your looking for UPS, I suggest APC, i haven't had a problem with this brand as well. But there were lot of better brands but it is always price to quality proportion.
Its up to your budget that you can afford, I'm sure you can have a descent product if you will try to search and look for its specs very keenly.
nice hunting bro...

as Hammer said, you can't touch this...