Here you go. I've left all information intact except the recipient's name:
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Hi [...],
I appreciate the inquiry. It's important to realize that domain names are not much unlike real estate. As a case in point, it might cost you $1000/month to rent a 250-square-foot space in the Bronx for a brick-and-mortar shop, but it would clearly be unreasonable to expect to rent the equivalent amount of space on Fifth Avenue around Midtown, NYC for a penny under $5K/month. The added cost, of course, accounts for the revenue gained from planting your store in a densely populated location and the prestige of selling on Fifth Avenue. As in any other matter of business, demand determines price.
Comparing BlushBoutique.com to ShopBlushBoutique.com, the expression "blush boutique" is regularly Google-searched 2400-2900 times per month whereas "shop blush boutique" receives nominal search traffic (see Google AdWords Keyworld Tool). Since Google heavily weights closeness of match between search expression and domain name in determining the ranking of its results, you would boost your site a long way towards the #1 google match for "blush boutique" (and I notice there are many other blush boutiques out there) by acquiring this domain and then hiring a web developer to build a landing page on it.
If it will make a difference, I can lower my tag on domain's price a bit, to $400, but that has to be my final offer because I could easily dispose of this domain for an amount in the $500-$1000 range by contacting the other prospects on my list. BlushBoutique.com was initially registered 10 years ago (re-registered in '05), and it's very rare for ten-year-old domains to sell for under $500.
I look forward to hearing from you. Let me know your thoughts,
Joshua