I'll be explain about the promotion 1 year period your reference can see a data as attached file ka.
LDO, They're wait the purchase contract document approve your sign. They said, Just have 10 customer for get the promotion discount and I get more information try to do the first step to get the good price we need.
In case, They recommend us to write the letter request for get the best price and then they will sent the letter of request on broad to be considered and feedback.
However, please let me know the best price, in your mind for the apply write the letter request.