.... and I deposited $400 into their bank account.
<snip>
Beyond google, where do you find pictures of musical gear?
Any story today that starts with depositing money into someone's account is almost guaranteed to end with "and I got scammed."
As my friend once said, "the WHY question occurs to me." In today's world, this is an even better question.
We all have moments of guillibility. Unfortunately this one ended with an expensive lesson. If you contact the bank where you deposited the money, maybe there's a way you can trace the person who scammed you and take action.
I Google photos of instruments often, but I don't buy them that way. If I'm going to buy an instrument, it's going to be (1) on a retail site using a credit card so I can contest a charge, (2) online at a site like Ebay where I can use a credit card via Paypal, or (3) by meeting them and paying cash.
I wish you better luck and better decisions in the future.