that's a standard sale price that comes along from time to time.
I have both the BT and the WiFi
as aspare I dont do cooking from my iPod/pad
it s worthwhile investment.
comsoider beer coolers for your container. light , same some energy etc
start off w HD zip lock bags and you won't go wrong
also
https://www.amazon.com/Anova-Precision-Cooker-WIFI-Watts/dp/B01HHWSV1S
the watt difference don't really matter that much , and you would need a router to use the WiFi
you are going to enjoy it !