Thank you for your response.
RMXX has been given "right of first refusal" but "shall not be required to purchase the product".
"In consideration for this right RMXX will pay 6% on a six monthly basis (4 payments in total 4 x 6% = 24%) of the total price paid by the customer for the product until the earlier of 2 years from the date hereof (29th July 2013) or the exercise or the failure to exercise the right of first refusal by RMXX".
Does this clarify anything?
I received an email from RMXX saying that they "fully intend to honour the agreement" they made with me and "hope to start making payments no later than March 2014".