[US] A previous buyer claims they accidentally sent money to me in Paypal and is requesting to send it back.

So I’m familiar with the Cash App scam wherein a scammer « accidentally » sends someone money and requests it be sent back, only to have them dispute the charge in the end once the victim sends the money back. I do not know if there is a similar scam for Paypal. For context, I have an online shop and my customers pay me through Paypal. A previous customer of mine had just sent me $11.50 and claims to have sent it by accident and wants me to send it back. In the first place, I cannot send the full $11.50 due to Paypal fees, and I had only received $10.69. If this was similar to the Cashapp scam, should I have them dispute the charge and let Paypal handle it? I’ve had terrible experiences with Paypal disputes. One time, I had disputed a charge which caused both me and the other party’s Paypal accounts to lock. I can’t afford that to happen right now as it will affect my business : »D Any advice would help! Thank you!