Yep prices seem to be falling a bit, no idea where Optics Planet is getting the 3-18's but they've had several batches of them over the last year and a couple other vendors have as well. Dvor has the 6-36 for $2350, Sportsmans had the 4.5-27 for around $1750 a couple weeks ago till it sold out. That said Optics will also let you put 15,000 Gen II 3-18s in a cart too so who knows how many (or if they) are in stock, but I'd bet it's not 15,000! That's always a risk with Optics Planet/Dvor you can snag some great deals, but there's always a risk it will never show up, or will take 2 months to ship.
Hard to complain about a 3-18x Gen II for $1000 when places are selling XTR III 3-18s for $1200. If I was a fan of 3-18x I'd have tossed them on about everything I wanted one on by now for that price. As long as you don't mind it's 4lbs and the color I guess