I just ordered a pair from Zenni and I am waiting on them to be delivered. I spent $23.85 TOTAL. I am really, really hoping these turn out to be halfway decent. I also only wear them at night, so they don't need to be top of the line. My son just had his frames break. Hopefully they can be repaired, but I will definitely get a backup pair for both kids' glasses at Zenni if they are good glasses.
DW just spent over $500 for a pair of glasses through our eye doctor

That inspired me to look elsewhere.