View sold lots on ebay to see if it's worth your time. List under correct category and run a 10 day auction starting at 99 cents on a Thursday night, ending on a Sunday night. That maximizes views and bids.
Figure out your shipping estimate here:
https://postcalc.usps.comPaypal + ebay fees run about 15% of total selling price (including shipping)
It takes me about 30 minutes to list & ship. If I'm making anything over $30 an hour (or $15 net per auction), worth it to me as a hobby of mine. I think of it as a digital garage sale. Bc you're helping your kids, go for it either way. It'll get them the best value.
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Class of '10 - A&M Undergrad & Master's Alum