The current price point of the 513 seems to be where Funai wants to be selling these machines, and frankly, I don't know how the heck they do it and actually make money on them. The 513 has 2.5 times the HDD space of my first DVDR and costs 1/3 the price. It's a little shorter on features, but has a darned good interface for the functions that count. (I was poking around in the setup menus of my Panasonic and found some options that I realize I've never used and don't even know what they do!)
Yes, if you wait, you probably can start getting the 513 in cheaper refurbs like the 2160 and maybe at blowout prices when the thing is finally, in direct-marketing jargon f-disc (factory discontinued). But it isn't always guaranteed that will happen. Sometimes supply on a product just runs out and there it is--gone!
The mfr never has to discount it to unload leftover inventory. The 513 will probably be around for a couple-three years, during which you're not enjoying the benefit of using it.
When I flipped for a J&R $159.99 refurb special 2160 a couple months ago, I toyed with just waiting a bit to pick up a 513 (not like I desperately *need* another HDD DVDR) for the larger HDD. But I thought about it and realized the extra HDD storage isn't that big a deal for me. I try to move "keeper" content to DVD-R discs ASAP, and how much just-wanna-watch-and-delete time-shift stuff do I really want sitting around? So the larger HDD is a temptation to stack up more un-dubbed material, and then have a big "oh shirt!" moment if the HDD cacks.
All of which I guess is the long way of saying, nah, the price on a new 513 probably isn't going to drop any time soon. I wonder when they'll start showing up in the refurb pipeline a J&R, though.