A drills a drill (unless its one of the sets you get from poundsaver, or the 30 piece wood/HSS sets for £2.99 down the market) First time you use them on any sort of material harder than plastic, they will be flattened.
You can bet most decent bits will only last about 50 uses max on any reasonably hard metal - 200 uses Concrete/brick/masonary , and maybe 1000 uses in wood (if its softwood)
If I were buying a set - I would go for something around that price. And yes, Bosch are great drills at a price I would expect to pay for them. We use them in work and they are great for the money. Anyone that spends more than that on drills is a mug. But, then again, I wouldn't buy a set (as there's too many in it you will never use)
Just buy a couple of very small bits (for starting holes), 5 or 6 medium size bits (depending on the plugs you have) and a couple of large bits. Unless of course, you need all the sizes.
Just make sure you get two of the 6,8 and 10mm if they are HSS. And god forbid you use it for something it's not designed for it will just wreck it in seconds and create stress on your drill and loads of smoke (try using a HSS bit on wood

) Cause thats the ones that will go first.....