Nice site, really like the lay out.
Your prices though, as others have noted, a far too low for the hours you claim to work. For an "Ultimate" you state it takes 16-18 hours and you're charging only $260.00. That's $16.25 an hour for 16 hours. I doubt though that you have factored in gas, product use, towels, tools used, insurance, and small things like laundry cleaning for towels, detergent, etc.
Factor that in and the bottom line is that you may actually be doing that detail for free....in other words you can't survive like that for very long.
You need to be making around $40 or more an hour. I understand your thought about getting into the market but if you have talented detailers already there and you try and low ball then you will not get the high end clients you're looking for but rather the high end pinheads that want everything at a deal or a "2 for 1 price". People, many rich people, shop by price. If your service is $20 cheaper they only see that you have to reduce costs because you have no work because you're no good.
Raise your prices and when asked for a booking tell people you're booked a few days out, set them up with a time and date and you'll call them if someone cancels. In a day or so call them, someone canceled and you can move them up.
Under promise, over deliver. That's our motto.
Good luck,
Anthony