Congrats on the new machine. Do you have it plugged into a UPS?
I've never had an issue with APC brand UPS's. I've had batteries in 2 out of 3 Tripp-Lite UPS's go bad within a year. They've sent replacements with no questions asked both times but I'd rather they just not crap out so fast in the first place.
Spend the $100. If your power goes out in the middle of a job just 1 time it'll be worth it.
$100 will not get you a APC UPS's anywhere near the size needed to power that if there is a power failure . You need a 1000w+ which will run around $600 or more.