
I used to think 20 sats/vB was expensive. But now I see 40 sats/vB is cheap. Because now we've kept seeing costs keep circling between 40 to 200.
I hope things return to normal and I miss transactions with fees of 6 to 10sats/vB. Now I'm even starting to doubt that we'll ever see such cheap costs again. 
While it is true, we all want 1sat/vB even if we do not use it, but you cannot always expect the rates to adapt to your possible TXs, adapt your amounts to the real situation.
Consequently! Send in time and avoid emergencies.
If you send $300 a fee of $3 is quite acceptable, within the limits of 1%-5%, which could be considered acceptable.
On the other hand, awareness is using the correct fee, which corresponds, if the highest priority is $10, understanding that putting $20 is not correct.