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It is usually 10-15s per month. And the annoying thing is you have to notice it and I prefer a watch that I don't have to double check.

You're right, I looked it up - it's per month for cheap watches. My bad!

±10 seconds per year would be quite an expensive quartz movement. To be that reliable anywhere it should be thermocompensated, too. This is the range of Grand Seiko 9F, Citizen Chronomaster, or Bulova Precisionist.

+/- 10 seconds a year for a quartz watch isn’t cheap. A Grand Seiko or Citizen high-accuracy quartz watch costs around $3,000 for the most basic models. A cheap quartz watch is an order of magnitude less accurate, which is still more accurate than a Rolex .