You could also replace the spokes and possibly rims and rebuild the wheels/hubs you have and get another 15 years out of them.
However, if your shop is breaking spokes trying to true the wheel, that likely means they don't have a competent wheel builder.
Why? Because the spokes are likely over tensioned from previous truing efforts, and they need to be all loosened and retensioned and trued to reset everything to proper tension.
Keyword: likely. As in "odds are, but maybe not"