eBay

These two very rare ÖBB 4 wheel coaches are in their correct boxes which show the Czech firm Warea s.r.o. as the maker;..
The catalogue reference is ADA 50301 & 50302. They are in perfect condition with user-fitted brake parts in place.
They would be ideal for a layout based on Niederösterreich/Vienna: they would complement a Brawa ÖBB 92.2nnn locomotive.

NB www.moba-preise.com shows the price of 50301 at 53 Euros. There is no mention of 50302 so I assume it has at least a similar value..

I have also listed two ÖBB 4-wheel coaches by Kleinbahn. While the detail on those models is not as fine as the models listed here, they would fit well with the 2 coaches listed here.