I personally don't think it's particularly brandable. In this case plural would likely have been better as surely there are priceS and not just one single best iPhone price? That would be a really bad website - with just one phone and one price
In fact, "bestiphoneprice
s.com" is available to register, so if I liked yours I'd probably just buy the plural for $10 as I feel it's better, making yours worth
at most $10. I advise you
don't go and register the plural version, let this one expire and buy something more meaningful and sellable.
Some people may prefer the singular in this case, but I don't think it works as the domain would be used to sell phone
s and so there would be price
s.
Have a think about the potential market, phone shops sell various phones, HTC, Nokia etc etc, so a site selling iphone's only, while very possible, is a niche and niche means a low end user market to sell to. For example, consider instead "BestMobilePrices.com", a much better domain in my opinion, and it's registered and sat for sale (ie no-one has bought it/used it).
I'm not saying someone won't want to buy your domain, but it's not a brilliant combination of words and the end meaning is also not ideal. Finding an end user will be tough given it's limited usage, and I doubt you'll get more than low $xxx after even a year or more including with some legwork, more likely it'll expire or best you will sell to another domainer for $xx.
Do some reading around the forum and other places about domaining, and importantly read sites which show sales, like NameBio and DNJournal as this shows you what
actually sells.
Good luck