I'd point you in the direction of Alonso last year (who did have noted high financial demands last year) and the Latin draft last year (Duran and Rodriquez last season where the Reds spent quite a bit of coin). How about JC Sulbaran? Wasn't that $500K for a 35th rounder? That was way above slot. The Reds signed most of their draft picks last year and I didn't see any knowledgeable commentator/website citing signability or frugality for the Reds picks.
Now, let's hear your argument for how the Reds have been frugal with the draft(ing), particularly with some facts.