Here are some of the upcoming ham coms, fests, and swap meets that are in or not too far from the D/FW area.
Irving Amateur Radio Club Hamfest - March 7, 2020 08:00-14:00
2420 W Irving Blvd, Irving TX 75014
http://irvingarc.org/
Belton HamExpo - March 14, 2020 07:00-12:100
301 W. Loop 121, Belton TX 76513
https://www.tarc.org/
Emory Tailgate Hamfest - April 18, 2020 daylight to ??
200 Industrial Blvd, Emory, TX 75440
http://w5ent.org/events.html
Texas Ham-Com 2020
Friday 12-JUN 12:00-17:00
Saturday 13-JUN 08:00-17:00
Plano Event Center, 2000 E Spring Creek Pkwy, Plano TX 75074
https://sites.google.com/hamcom.org/ham-com
Oklahoma City Hamfest - July 24-25, 2020
OKC Community College, 7777 S May Ave, Oklahoma City, OK 73159
https://hamholiday.com/
If you don’t mind driving a bit further there are others in TX, OK, AR, and MO that are pretty good. Local clubs often have tailgate sales and you can sometimes find bargains for sale.
73 de John KF5I