Selling used clothes

I’ve always gave away used clothes that my daughter couldn’t fit for free , but I need alil extra cash and was wondering the best way to go about selling them . I’m very reasonable so I’m definitely going to be very cheap . Any website you guys like ? Like offer up or mercari? . I have a construction bag full of 3T girls clothes and 6c shoes. The shoes look alil used so I was going to wash them . But how much would you pay for this ?