APV Mod Wattage Range: 151-200W, Temperature Control Range: 200 – 600Deg.F, 2x Battery Form Factor: 18650.
Price history, coupons and price alert are available on this page. What is the best price?
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Latest coupon and price update (UTC):
Price history and price alert
Here is price history (for all/most countries) for DOVPO Thunder 200W TC Box Mod. The lowest price was: $35.87.
Price records source(s): Gearbest
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).