FLYPUPPY
Bonding does not work like that generally.
Either of these three thing happen in UK aviation generally:
A) No bonding, because the airline does not believe in them. i.e. B.A.
B) A bond, which you sign for a specific amount of money over a period of time. Normally circa £12000 over 3 years. The aim here is that the bond deteriorates over time. Basically it erodes over 36 months, so if you leave in month 2, you owe £12000/36 x 34 (the amount of months left owing).......or if you leave in month 16, you owe £12000/36 x 20...... and if you leave at the end, you owe nothing. Generally you pay nothing out of salary at all. So, you are wrong on that point. e.g. Britannia, jmc, Air2000,Monarch and many others do something like this.
c) Scabby operators make you pay the full amount up front for their legitimate business expenses. e.g. Ryanair, BAC express etc.
My advice is : DON'T PAY FOR A RATING!