1. How long did it take you to eat?
2. If the price spike happened only a candle or two ago then there's nothing you can do about it. $hit happens.
3. If it happened in the middle of your dinner time then you either bring your phone to the dining room (assuming you eat together with your family members) or you bring your dinner to the work room. Option 1 is a disgrace in some cultures, option 2 is also shunned in some countries. Or, you could simply close partial or all before you leave the trading terminal. Personally, I bring my dinner inside and my family understands coz it's their livelihood I'm protecting. Of course, I talked to them about the nature of my job long ago so when they see me doing things out of the ordinary they know it must be "that" thing.
Ha, ha ...I like to take my time for diner. Also...quite often I am the cook.
Best would have been to just leave my SL where it was. Far away...