Wiley Horne
Yes, it will save money compared to Tormek. However, since you either already own or will be buying the grinder, and very possibly cool-running wheels, your real comparison is the Ian Kirby project versus a commercial blade presentation rig, such as the Tormek BGM-100,

https://www.tormek.com/usa/en/accessories/other-accessories/bgm-100-bench-grinder-mounting-set/

plus the actual blade holder, like the Tormek SE-77 blade holder. Figure about $200.

Or the One-Way rig that many like (see Lee Valley for example), where you hold the tool. Figure about $100, I think.

There is of course food for the soul in doing the Kirby project, which has to be figured in .

Wiley