Feist male puppy in Greensboro, North Carolina For Sale

i have a 4 month old feist puppy he has all of his puppy shots dewormed potty trained with paper working on leash training once he is outside he is hard to get back in the house i bought him from a lady she said he was a chihuahua but took him to my vet he is full blooded feist he gets along fine with other dogs not sure about cats i paid $50 for him paid for all of his shots so i am asking a rehoming fee of $75 to make sure he goes to a great home he is not fixed i have a female chorkie thats why i need to get rid of him bc if he breeds with her it will kill her so he needs to go asap