I think returns improve with additional research.Better than average market returns by far, but after deducting management fees and transaction costs it was a tremendous money losing investment!
I don't think it's worth hiring professionals, but you could consider selling options...
Yeah, no kidding!Hey, don't "dis" the Corelware! They are still our daily dishes (though we've bought several sets so we only need to run the dishwasher every few days). They look okay, stack well to save space, are almost unbreakable--perfect!
If you stick to the more popular Corelle patterns and patrol Goodwill monthly, then you'll be able to keep picking up spares for less than a buck each.