Dave, installing a cartridge is always an adventure; little tiny wires, and big fat clumsy fingers, handling something as fragile as a toothpick, and costing 1K; any slip can break that flimsier than a toothpick cantilever; that's when I'm sweating in the Winter time.
This is tech talk, if anyone wants to inquire about cartridge installation I will engage them, but I'm not a good salesman for analog because it's too expensive, plus there is only a little wiggle room for saving money, and cartridge is not a place you can find it.
As far as bang for the buck, I never expected room treatment would take a person so far. By applying absorption in different places around the room, I'm able to visualize partially what it will be like when I make it permanent.
Since this will be overall sound, that means a big boost on the audio rating scale. I'll try to compare this with the dollars and cents increase in components, to have an equal increase in total sound improvement.
It can take several upgrades in components, meaning number of components, to get a substantial increase in total sound improvement. This will be an interesting comparison; especially if we are considering "room treatment" as one component.
Enjoy the music.