I am surprised that the transplant team did not thoroughly discuss a plan for your prescription needs after transplant so you would be prepared.
Is there no medication assistance program? No health insurance? Or is this amount after insurance?
Here's a related thread, I know this is primarily info for US patients, but it may help you to research some resources to get you some help.
http://ihatedialysis.com/forum/index.php?topic=2522.0I don't understand how anyone could afford to get a transplant under those conditions. Good luck to you!