Yes, we can definitely include you to the waiting listing for any sold out frame. All we require is your email address to include you to our waiting list and you will be notified once the frame is back in stock.
We are constantly adding new styles to our collection so we usually have a limited quantity for each style.
It really depends on the frame you are looking for. Please keep in mind that it could take up to 3 months for a frame to come back in stock but the good news is that we are constantly adding new styles to our collection so please feel free to check the website as we have lots of amazing designs.