Lowest price on PCPartspicker USA is currently $200. Lowest I've seen it in Canada was $230 around February, currently $280 including shipping.
As for whether my i5 still does what I need it to do well enough for my liking, I'd say 90-95% of the time. The remaining 5% takes hours now and would still take hours no matter what I may upgrade to, so I use the "go do something else" strategy backed by 32GB of RAM to make sure swapping won't make me acutely aware that I have stuff running in the background like it did back on my Core2 with 'only' 8GB.
Upgrade-wise, I may consider an i5-11400 next year. I'm not feeling particularly zen about Ryzen since my first experience with it (a friend brought parts for an 1700x/x370 build and asked me to put it together) was a no-boot with the store blaming us for frying components until they tried putting the exact same config together from fresh parts and couldn't get that to boot until a whole bunch of parts-swapping later.
Well, early Ryzen motherboards were utter crap, apart from some select models from brands that put more stock in proper VRMs than RGB or plastic shrouds over I/O panels - and not the highest range at that. I have a B350 Bazooka on a test bench, it works wonders.
I built many Ryzen systems since 2017, the first and second ones were rather unstable for the first six months. After a BIOS upgrade and a newer Windows 10 release, they are now rock solid. Newer Ryzen hardware (since S2 2018 at least) always worked right away - no glitches, no BSOD, excellent performance.
I had trouble with Haswell-based systems though, where Windows 10 after 2017 crashed at boot in UEFI mode. Probably to be blamed on the mobo maker's lack of BIOS fixes, but that proves that it really depends on the mobo manufacturer - not the CPU itself.