OR I can spend same amount of money(obviously not counting the sale price) and obtain a KNOWN GREAT tube in the process, and not have to wonder or worry..
There was a time I bought into some hype about a company known as Blackstar.... paid premium for a hyped but basically unproven tube and metal and treatment.
Barrel life did seem better. Accuracy was mediocre, but lets just say it was replaced by a mid line Pac Nor tube that outshot it fairly quickly.
Let us know how yours turns out. They may be worth it in the end.