I've noticed the "deposits" have increased substantially over the last few years but, since they generally put a "hold" on the funds rather than actually process a charge, I don't have a problem with it.
Always read the t and c's so you don't get a surprise!!
I have also noticed the deposits have increased substantially, two years ago the average amount was about 600 euros, that seems to have risen to as much as 1,500 euros. Personally, i think it is to scare people into taking out their insurance which has also risen from about 8 euros per day up to around 18 euros.
For those of you who arrange your own excess insurance have you ever had to make a claim and was it without hassle?