The RF 24-105 has been included with what is probably the majority of all EOS R and EOS RP cameras sold so far. I suspect that as people upgrade to the RF 24-70 2.8 or switch to the RF 24-240, they will likely try to unload their used 24-105s. They certainly seem to me to be the most widely available used RF lenses on the market. That wide availability both as new and used should help keep the price of that lens reasonable for the foreseeable future.
If I recall correctly there's 24-105 L RF lens and a non-L one too.
Given how much actual distortion the 24-240 has, if I had a 24-105 L I'd be inclined to keep it.