if you order a reptisun 10.0 online after shipping your going to save at most 15 dollars over the local store that is selling them for 45 dollars, its entirely up to you of course but think of it this way if you bought the reptiglo and then shortly after replaced it with a reptisun bought online you could have bought that local reptisun and went to lunch on the money saved
another thing to look for in the future is reptile shows, there is one going on in san jose, ca right now and yesterday i picked up a new reptisun 10.0 for 23 dollars from LLLReptile at the show, they were selling all sizes of 10.0's for this price so i could not pass it up
oh and one more thing, check all bulbs before buying if you buy locally, the first reptisun 10.0 i got at the show had a manufacturing defect in one of the end caps and clearly would not work, unfortunately i did not take it out of the box until i go home from the show so i had to go back yesterday to exchange it but at least i didn't have to mess around with return shipping bs like i would have had i bought it online.
petmountain.com is where many people get them online i got my 48" 10.0 from them they did a good job of boxing it but they charge you extra shipping for florescent tubes because they must be double boxed to protect them so it ends up costing around 30 dollars if recall