Hey Tom,
He wanted 40k off me for the 737-200! He said he could do the 727 for a bit less. How generous of him.
You can get a 73 classic rating in the US for about 7k so I would do that and then call places in Africa and offer them 20k for the chance to sit in the RHS of one of their 737's for a year and I sure you would get more than a couple of offers.
I'm not suggesting anyone actually does what I just suggested but that way at least you have some control.