Sure prices are rising, but wages are rising, in order for prices to fall (meaningfully) you require a depression, deflation equates to unemployment (and boy is that coming over the next 1/2 years).
Back on point, this is this hobby isnt cheap, but nor should it be, the volume of waste (fish in particular dying in transport) isn't something we should encourage IMO. My understanding is death is close to 50% whilst in transit, and that is not accounting for those which die after having been sold. So the Yellow Tang selling for $20 was insanely cheap given how many died before even hitting the LFS.
If reefing is to be sustainable (and ultimately it needs to be) then costs need to rise. Obviously the acceleration in costs will slow and find an equilibrium, strikes me we are close to that right now.