Mate I wouldn't put too much money into this project, Corgi is trademarked to high heaven and should imagine they certainly challenge any succesful site.
They'll probably ignore you while you are small, but soon as you get well known, bang they'll do their best to shut you down.
My advice get in and make a quick buck and sell on, Corgi are another not for profit organisation with endless pockets, not worth taking on.
All the best with it,
GW