Firstly I bought this DeWalt Driver Bit Set:

total of 45 pieces, but instead of having bits covering all the various sizes, it concentrates on the most common sizes including 8 x Titanium P2 and 10 x Normal P2 in standard length, some double-ended P2s and P2 + Flats, various Square Drives and some adapters.
Bought this as a better quality item to replace bits from a cheap and nasy B&Q set.
Other set I bought was this Ryobi 17 piece Drill Bit set that features a 1/4" hx shaft and a locking chuck to secure the bit in the drill

Again, this set is to replace the drill bits in the B&Q set - especially as two recently shattered in normal use

These bits are Titanum coated and look a lot better quality.
Lucky enough to be able to buy them in the US and they came in at £10 for each set.
A fair price for the Ryobi, but seems excellent value for the DeWalt set
