Ideas on where to buy bags online?

[hophophippidtyhop]

I'm after a bag for my mum, looking to spend about £30- £50, been looking through the internet, but running out of places to look. Any one have any good sites for bags, or clothes sites that do bags too? I liked the look of this bag or this.
Doesn't have to be leather, but must be fairly simple - no tassels/jangly metal bits,prefably brown tones or black maybe. Any ideas on places to look appreciated,so far I've looked at most dept stores, some clothes shops.