I'll pay more for a better window in the Velux line when it comes to skylights. I personally haven't heard great things about Anderson and Pella in this line.
When you order the window, make sure you have the RIGHT pitch! There are special flashing kits for low-pitch roofs. (At least VELUX does, and if another mfgr. doesn't, I'd ask, "WHY?".)
Here's Velux's link: Velux. Best to ya. Home Depot has them and can order what you need.
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