My first job was as a commissioned employee in a pet store. I can absolutely tell you I would sell you a 60-70 dollar lovebird and then convince you to get the 200 dollar cage now since you'll need it later and it's better than having to get it later, the expensive food because it's better for it, the toys because birds are like bored children and can get into trouble without toys, the nail clippers (unless you would like to pay me to do it) the 10 different perches because just one perch will cause foot problems the little moth catchers just in case the airtight food container, the seed guards to protect your floors from food and poop. And in one of your shopping bags will be my business card telling you that I provide nail and wing trimmings, and I will persist for you when on holiday ( with prices listed)...

Its all all about the stuff. And people would come back, because I knew what I was talking about and gave quality service. Even though I pretty much got them to buy half the store. I even had pictures to help explain why you needed to have what I wanted to sell you.