Gonzo is right - even for just the parts to build 410
R (all-plastic) front hubs I needed to spend 25 euros - this is without bearings, driveshafts, pivot balls, wheel hexes, wheel pins and postage. Ridiculous!
And for example Durango's pivot balls are also hideously expensive - luckily they do seem to be made of steel. If I had more time I would've looked at buying new parts from other people, but I didn't.
Parts supply for some parts seems to be down in whole Europe currently - for example 210 RR suspension hangers.