New Caledonia 105 VS Used Caledonia Rival AXS VS Used Caledonia 105 Di2

I live in the US, and I've landed on the Cervelo Caledonia for my next bike purchase. I am between 3 options, linked below. They are all roughly the same price. I am mainly curious if the electronic shifting of the Rival AXS and Di2 models are worth going used instead of just getting the Shimano 105 version brand new.

2025 Cervelo Caledonia 105 (NEW) – $2,640

2022 Cervelo Caledonia Rival AXS (USED) – $2,520

2023 Cervelo Caledonia 105 Di2 (USED) – $2,550