My bettas are not show quality specimens. Thus they are not mind-bogglingly expensive. I choose my fish according to the colors I like. My ol friend, the esteemed Tenchi had a few pics of some expensive betta in his blog just to amuse me.
p.s. - My mom asked why I didn't get the females. I told her I am not going to start a betta farm (yet). She also said she haven't seen one for a long time, since the days she lived near the paddy fields.