Scrapwing?

I have pictures to share of my painting progress, but unfortunately/fortunately I wasn't able to pull them off the camera last night because I was busy negotiating to sell my house.

Instead, I'm going to ramble on about yet another project I'd love to do if I had the free time: Scrapwing.

What's Scrapwing? Well, it's this idea I have where I buy a unit of used Terminator models one at a time on eBay or Bartertown, strip them down to plastic/metal, and rebuild them into a Deathwing force. Deathwing from scrap models = Scrapwing.

I like to pride myself on my ability to rehab old models. There's a significant percentage of my Ultramarines that are made from pre-owned models or pre-owned bitz. Building an entire Scrapwing army would be neat, but it's not a project I'll actually tackle right now.

Why not? Well, here's where I ramble. The reasons are twofold:

1) Time. This is the big one. I'll be moving soon, if all goes well. Once that happens, I'll be up to my ass in farm work. I forsee a lot of my painting being done in the winter.

2) Money. Honestly, I'm not hurting for hobby funds, and if I were buying secondhand models and repainting them, things would be even cheaper. But the part that doesn't make monetary sense is the comparative costs.
You see, GW has been putting out some very good box set bundles and campaign sets. Dark Vengeance is a great starting point, and I'd likely pick up one set of the five Terminators in that set to start the project (if I were actually to do take it up). Right now, you can get a full set of the five DV Terminators for about $10-15. That makes each Terminator cost about $2-3. A multi-part model from any of the Space Marine ranges is $5 or $6 (for Chapter-specific models). So the DV models come in at less than half of a retail Terminator. Not bad, but you don't want to build a whole army from the same five models!
You can land used squads of various Terminators for anything from $10 to $100. These are typically someone's old Black Reach models, or poorly painted/assembled normal Terminators. Prices vary wildly based on the seller. You even have sellers hawking squads of old, metal Terminators in various states of paint and assembly for foolish prices. The more times the words "vintage" or "OOP" are used in the title, the more outrageous the price.

And then there's the seller I found who's been selling five-man, multipart Terminator squads for $25 shipped. It's the torpedo that sinks the Scrapwing boat. Tons of half-price, multipart Terminator kits are available for less than the cost of USED models. These are all being sourced from the Shield of Baal: Deathstorm box set.

Why, other than to be quirky, would you spend MORE money on used models to create a Scrapwing army when you can spend LESS money on brand new models? It's sort of a funny state of the game right now, with GW's awesome bundle deals in the form of campaign sets.