Can someone please explain about this service?

Can someone please explain about this service?

Hi there. I'm new here. I have a request, is there anyone could spend a minute to explain to me what does this service mean? https://www.seocheckout.com/Other/...-Account-Balance

I don't understand, where do the funds come from? Are they from our own PayPal accounts?
And if we purchase this service, what can we do to the money apart from using it to buy services.
Please help me, thanks!