[logfromblammo]

Point of fact: maximum is now, by my calculation of the numbers, $1450. 14CFR250.5(e) included an inflation factor based on CPI-u, since August 2011.

And that's $1450 cash. If you want to give vouchers, they have to be worth more than the cash equivalent to begin with, and the customer has to give voluntary, informed consent to accept them. No one in their right mind would give expiring travel vouchers value equivalence with the same face value in actual cash.