For $700 and under Dressage saddles, you're going to want to go used. There are not any leather saddles that retail under that price I can recommend. If you don't mind synthetic, you might look at Thorowgood or Wintec.
For reins, just stick with a quality brand, like Bobby's, Stubben, Courbette, Arc de T, Ovation, some HDR, some Perri's Leather, etc. If it says "Made in India" or "Made in Pakistan" on the tag, or just "Imported" in the item description online, pass on it. Tory leather is decent and so is Treadstone, though I think Treadstone is "assembled in India" using English leather.