I wanted to get a second 40v battery for my Ryobi chainsaw for longer run times. Last fall, Home Depot had a sale on the Ryobi 40v snow shovel kit. I also had a $15 discount coupon and opened up a new credit card account for another $25 off. In the end, I got the entire kit for less than the price of the battery alone.
The frugal part, in addition to the initial purchase savings, is that I also have the Ryobi 40v grass trimmer(s), power brush, chainsaw, mini tiller, leaf blower, and brush cutter. All those tools use the same battery which saves you lots of money. If you can find a brand of tools that has everything you need, it's really to your advantage to stay in that line so you can just swap out the expensive battery from one tool to another.
I have a big 28 inch gas snow blower. Living in northern Minnesota, you need a good snow blower to clear the driveway - or be willing to wait for someone to plow your driveway and then pay them for the job. I chose to blow out my driveway.
Anyway, the big gas snow blower that I have costs something like $1500.00. The small 12-inch Ryobi 40v snow shovel is not designed to clear your driveway after a storm. However, it is an excellent option for clearing the deck and sidewalks. Yesterday, we got a light dusting of about 1 inch of snow. Instead of starting up my big snowblower, I just slapped a battery in the snow shovel and started to clear the driveway. To my surprise, that little 40v snow shovel lasted almost 45 minutes on one 4Ah battery. I got almost my entire driveway cleared. I ran the snow shovel until the battery stopped.

So, how much does it cost to recharge this 40v 4Ah battery? I wanted to know. So, I plugged the charger into my Kill-A-Watt meter and fully charged my 40v 40Ah battery. According to the reading on the meter, it took 0.13Kwh to fully charge the battery.
0.13Kwh X $0.12/Kwh electric rate = $0.0156! For less than 2 cents, I cleared my driveway!
The going rate for a pickup with a snowplow starts at $50 for a driveway where I live, and it goes up from there. Certainly not worth it to clear a couple inches of light snow. I'll do it myself as long as I am able.
Obviously, you pay a lot for the battery up front, but after that it's practically free to use. And it is so nice to be able to use the same battery in a number of different tools.
I know some people are resistant to buying into battery operated tools, but they do have some advantages. Back in the day, I used to have to replace my gas trimmers every 2-3 years. Since I went with battery operated trimmers, I have used the same trimmer(s) for 10 years because they do not have a carburetor to get all gunked up over our long winters.

I am wondering what other people think about these battery outdoor tools to make your life easier. Are they a good value to you, or not?