If you specify the request then maybe you get a better help, ok I know that you mentioned the size 24x1 and the footprint spacing 2.54mm this will orient all the users to suggest you to use a bigger socket and cut it out or to combine small sockets until you get the needed size.
If you have some limitations on your design you need to mention this otherwise i don't see any problem from combining multiple suckets.
about suppliers, have you searched for this socket on Amazon or Ebay, I know, not the appropriate place to look for electronics stuff but since you don't have many options then you can give it a try
I buy all my parts from Farnell and I recommend it for you