Looking for a 1997 made after March 1997 BMW 740iL transmission. Not too $$$!

What is your question?

Need a 1997 BMW 740iL transmission. Need it for my made in March 1997 BMW 740iL. My cousin damaged the transmission and wouldn't help me in any form or fashion after. I live on a Federal Employee pension and can not afford anything over $500. Can you help? It needs to fit my car made in March 1997. Already bought one that would not fit. Seller tried to take me and not return it. Got them back by getting the money from Paypal.com back! Live on a Federal pension because of injuries from the Gulf War. Can anyone help please?

What makes this problem better or worse?

Transmission is gone!

How long has your 1997 BMW 740iL had this problem?

A few weeks say July 5th or the 7th.