I ordered a complete "ladder" portion of a Spanish Mauser M93 rear sight from Springfield Sporters last week. I paid $5.00 for it + shipping, Numrich Arms wanted $12 + ship, and it was selling on eBay for $21 + ship.
I received it today, what a surprise. this thing was Brand Spanking New
(not reproduction either). If they have in stock what I need, from now on, I will never buy another military rifle part from any where else.