i have just got an in-car dvd head unit. i looked at the one you are looking at, but ended up going for a silver one from a uk supplier with a buy it now of £139.99 & £10 postage for the following reasons;
1) It is the same price as that one by the time you have taken postage into consideration
2) That one states it plays DVD+R, i decided to go with DVD-R a long time ago and as i wasn't sure if it would play them it seemed a little pointless as i would never play a genuine dvd in a car incase it scratched it or it was stolen, i would take a copy of it for the car.
3) If it is going to cost £150 for either then i would rather the bulk of it were for the item not postage.
I actually got it for my mum for her birthday to replace the radio cassette on her boat so won't be fitting it for a while, but if you like i will give you an opinion when i fit it.