thanks for volunteering to answer questions !

Here is a question about volunteering on an oversold domestic flight ...

in the past you were offering free domestic roundtrip tickets ... which could sometimes be exchanged for 4x100$ discount certs ....

in the past few months it looks like offering the discount certs booklet is the default (a great thing ... more flexible ) but it looks like the certs are now 4x75$ .....

is there a rule regarding the value of the certs regarding the "volunteering" being done ... something like 4x50$ for a short flight , 4x75$ for medium and 4x100$ for longer flights ? or is it flat 4x75$ with no flexibility ?


Thanks !