It depends on how high we go! 

As an aside, I pretty disappointed that after 100’s years of technological innovation and financial progress we are still reduced to burying our money like Long John Silver, a Roman Legionaire or Napoleonic Soldier… 

carlosfandango

Somewhere in the ballpark of £20-30 a month. One has to assess whether or not the cost is worth it, but I'm assuming that custodial multi-sig wouldn't be considered for anything other than large amounts to begin with.

orthwyrm

Stacker Saloon

saloon

There may be an argument for using both - one as deep and one as intermediate storage. Not sure on the costs of a SDB though… As a plus I think you can authorise access to someone else with all the checks in place. 