Well... Sometimes I sell all my Fantasmas or all my Slobbers (attempt to, at least) and earn 500k-1mil. Some other times I go out of my mind and spend 4 mil on gear (why!? Why me?! Why am I doing this?!).

Most of the times I'm maybe close to your estimate, maybe less... I mean, lately I've just been running Jarl which doesn't really give much (but it's so addicting... Why is it so addicting?). Tbh he drops maybe 500g each run so a few runs later I find myself with 20k extra so it's not that bad (and fun!). Plus a couple house slot kits a day are nice .
It's really hard to make an estimate though, I've been all over Arlor lately trying to stay as far away as possible from km3. A gold runner here, 10 silver runners there, a finesse jewel elixir, three Malis one day, 0 Shadowfangs the next, a couple teeth in Tindi, a few cryostar coins in Underthul...
Meanwhile crafting jewels and locks...
Seriously, how am I supposed to check my daily income xD