I usually am annoyed when people post a specific deal from a sitewide sale/deal, but I was just so stoked after getting this lens for only $376 (actually I had $9 off Rakuten points so a bit cheaper) without tax shipped for free! It is retail $479 and I've been watching it on Ebay for a few months, never dropping below $400 used.
This is the best EF-M lens you can buy that some reviews suggest is on par with L series. There has been Sigma ART lens deals for EF mount, which is a superb old lens, but with a EF to EF-M adapter the thing is a huge. The whole point of mirrorless for me was the portability and I love my m50. Perfect timing too because I'm tired of getting shown up by my sister-in-law's Sigma ART 1.4 taking amazing photos of my baby last week.
It is $437.09 and additional 15% off with max of $60 so it is about $376 with FS. IIRC 6ave electronics may have tax if you are in NY.
Canon EF-M 32mm f/1.4 STM Lens [rakuten.com]