WTB older iphone

[Jacack]

looking for a older Verizon Iphone for my mom, she has a old 6 on its last legs and she is uses it to make calls and check weather and that's it ( doesn't even have wifi at home) so i hate to buy a new phone for her that she wont use 90% of what it can do and I use samsungs and don't want to give her my old onbe and try to retrain her to use it.

looking for cheap options, small gig is perfect

thanks
Jared