This would be a great client-friendly option and could increase sales for the Agency's Handy Clients.
Q: What happens if a client wants to order 2 or 3 different services? Do they need to select --> pay for one selected service and then go back to the website after paying? And then start all over?
A: Yes
Q: Would it be possible to add a "Continue Shopping" button so the client can go back to the service list?