different types of webpages

[zoeinthecity]

morning (again)

gosh i have a billion questions. Thank you in advance for reading and replying.

Now its a quick one, what is the reason behind a webpage like these (with all the white, yellow black and massive sales spiel)

http://www.salehoo.com/secrets/?hop=...fqgsagodywcwra
http://www.90daypianist.com/

and one like this that have a "shopfront" vibe:

http://www.organicsleepproducts.com/

Is there any particular reason for doing the first one, do they sell more than a "yahoo store" type website? are they better for SEO? IS it just a matter of testing which works best for which product?

Thanks!