Have you thought about using a quartz-glass sheathed element like one of these? They are cheap enough, and available everywhere., although this would require a triac and a diode network to give you around 100V DC to produce 200W..
https://www.ebay.co.uk/itm/3pc…1e9df8:g:0uMAAOSwvGZcWjUQ
Apologies btw for all the EBay links, it's just that they often provide the info and a picture in one convenient package.