Is this a good laptop for $225? Lenovo z580 idea pad 4gb ram 500gb 1gb nvdia Windows 10 3 yrs old?

You need to note you are in Canada to get realistic answers.
If the laptop is in full functional condition, it is an excellent value for the price.
The CPU details are missing from the ad, but they were all pretty good CPUs in a Z580.
The graphics processor for gaming is not great, but you can't expect very much at this price.
It is an adequate general usage laptop.
http://shop.lenovo.com/..._DS_EN.pdf
i3-2350M is the minimum processor, and statistically, it should be better because of all the other possible.
With a minimum score of 2630 and maybe stronger, the CPU is adequate for daily use, as equivalent to an i3-4010U or so. The included graphics card, active on AC power, is stronger than any Intel Integrated graphics ever produced.
You can upgrade ram at not too much money at another time, but it isn't necessary.

Overall, pending other possible sellers, you can say it is one of the best available for the price in Canada.
That assumes it is fully functional. We can't answer to condition of the laptop without seeing it work.