Staples - even their smaller stores seem to stock a couple models and most others can be had in a day or so. Only drawback is sales tax if your state collects it. Also CompUSA - often have sales on some models. Internet order compaines I like are Dealsonic.com, zipzoomfly.com, outpost.com (div. of Fry's), yesmicro.com and provantage.com (and newegg, of course).
. Too bad your profile isn't enabled (I usually don't reply to questions if they don't have their profile enabled) so we can't tell where you are located and you didn't mention which model you wanted so the reply could be a lot more focused.
.bh.