Thank you everyone for your replies. Such friendly and helpful cat lovers in this forum!
I am from the Philippines and I'm not sure if there are a lot of catteries here, most kittens are bought from pet stores or through postings in newspaper ads and online ads (like where I found these) and they are most probably what you call "backyard breeders".
Actually, I'm not really looking for a show quality cat - just to keep as a pet to love and care for. And I happen to like the looks and personality of a persian. Reading your posts, I am now more inclined to get one of the white kittens, as they seem to look more like a persian cat. The average price of most "persian kittens" here in our country is US$130 - $180 for non-CFA registered kittens.
I will be seeing the kittens at the end of this month and decide whether to bring one home or to keep searching

. Again, thank you so much for all your thoughts - I'll be around!