You're certainly free to buy what you want, and it's not really about money. I'm just passing on my frustration with them (and I was using them correctly). I get the 'another arrow in the quiver' argument - except that a Walton that shears off (my usual experience) makes matters worse. So I'd think of it as an arrow in the quiver of last resort. A more expensive, but more successful method for me has been 'omega drills' :
https://www.penntoolco.com/omega-drill-broken-tap-removal-drills/ Though a lot of the time, as soon as I have a nice centered 'dish' on the top of a tap I'll just get at it with a carbide / carbide tipped drill (faster).
GsT