What would concern me is, for example, if the cost of a transaction grows faster than the price of a given bitcoin in dollars. If that trend would continue for

What would concern me is, for example, if the cost of a transaction grows faster than the price of a given bitcoin in dollars. If that trend would continue for too long, then I suppose my bitcoin could get trapped in the system for an indefinite period of time, that is, from the time I no longer can justify moving the bitcoin because of high transaction fees to the time I can. It seems that this situation suggests a lower bound on the amount that makes sense to store in a bitcoin wallet. I wonder what that lower bound is today.