I wouldn't think it would cost anywhere that much but certainly 2-3 hundred for a set of ribs and formers. But really don't get all hung up on the term "scratch build." Making a model from RC model plans is really not all that different than building from a kit. Most kits aren't much more than a box of wood anyway. With your experience building the Albatros you should be able to "step up" to cutting the parts you need to build from Alan's plans. Have a look at the photo of these plans in one of the earlier pages of this thread.

Now building a model based on technical drawings (or 3-views) of a model is a WHOLE different level. But with a set of RC plans someone (like Alan or Tom) have already done all the hard work for you. But even with the best of plans (and the best of kits) you still end up having to make a lot of decisions yourself -- and THAT's really all scratch building is.