Yeah, the $199 doesn't seem that bad to me for a very high capacity battery for Apple 'showcase' computer right now.
The retina display will gradually make its way down to the other models. I remember all the gnashing of teeth with the internal battery on the unibodies, but I think the unibodies have the best overall power design- great battery life, 1000+ charge lifecycle, user replaceable (just not in the field).
Originally Posted by Gomff
$200 / £160 seems on the pricey side to me, but the rMBP is bleeding edge and Apple will make you pay through the nose for the privilege of having it. Lets face it, the price of entry for the rMBP makes most people's eyes water anyway so it's not really a surprise that anything connected with it follows suit.
I suspect newer iterations will have a more elegant servicing solution than a glued in battery, but I'd be amazed if Apple lower their price for replacement.
Ya' pays ya' money, ya' takes ya' choice.