hi rob,
well i could be of some interest to you. I own a website which advertises salons, spas, gyms, personnel, sports clubs and now will also do fashion.
Also have a forum
www.hbpboard.co.uk which you could take a look at.
I think you are facing a tough decision between the two. Just to point out however, becasue i have a whsmith branded pen next to me dosent make me go to the website, or buy anything else. On the other hand, if i saw a whsmith advert on the net i would not click on it and buy something from their website.
What you have to consider is who you will be giving your pens at. Single people or couples without children will not buy children ware. Also, how many of thoes 400,000 people are unique visitors. I have 10,000 hits a month, but only 500 are unique (dont laugh, i have just started the website and have not advertised it at all).
Do you sell online or in a store?
Miro