I amagine they wont give as good a ride as some of the more expensive kits, but as I say, it is far from unbearable and at that price is well worth it.
£50 for fitting is also very reasonable. I cant comment on how hard it is to do yourself as I havent experienced working on my Toledo yet, but if you are not that way inclined then that its a decent price. Of you do go for a set, let us know, as id be interested how they are on the toledo as I might look at getting myself a set also.