The spokes broke at the nipples.
So now here is a new question. Dollar for dollar how can I get the best wheel:
I can buy a replacement at a bike shop for around $60. It would be basically the same as what came with the bike. Then I would have a spare to use on the trainer. But I don't ride my trainer that much. I mainly use it for bike storage and adjustment.
Or I can get new (and hopefully better) spokes and rebuild my wheel. With the same rim. I might have to pay an lbs to do the final truing and tensioning.
Or I can get a $30 Mavic MA3 and build a new wheel. Would that be better than using the Alex AT450?