I am also a very friendly player, so feel free to shoot me a friend request or pm! I am not always actively looking so it may take a while but I promise to get to you!
As far as horses go, absolutely none are ever for sale, unless they are listed for sale. Otherwise, please do not ask "How much for" or "Can I offer for" the answer is no, even on the seemingly "regular horses". I get attached very easily to these pixels of mine, and thus would like to hold onto each one that joins my breeding farm.
If I have purchased a horse from you, of which you mistakenly placed in sales for the wrong price, I unfortunately will not return the horse. I have purchased said horse fairly through direct sales, and therefore now have the rights to do as I please, whether that is to keep or even resell said horse. (Rest assured though, I have yet to resell any "cheaply" bought horse, so they will usually stay in my breeding farm to be permanently cared for)
I am an avid pass buyer, and do not mind supporting the games I love 
I try to return all congratulations, if I missed you feel free to remind me that I have, and I will be sure to get to you!