Is there a chance i can sell my iphone 4s even if it doesn't connect to Wi-Fi anymore?

Cos recently my iphone doesn't connect to Wi-Fi anymore. From what i know, the problem is not with the software of the phone. I told my mom that it's not connecting anymore and she just shrugged. I was thinking of selling my iphone to buy cheaper ones. Do you think someone will buy it?

Someone might buy it but on a very low price.

Of course you can. I sold many iPhone with defect like crack screen, broken camera, broken lock button. You just have to price it lower since the Wi-Fi does not work. Put it on craigslist because there's no fee and you can get cash. I wouldn't be able to tell you how much since you didn't mention the gb amount and what service is it for. But someone would buy it if its cheap.