Also worth bearing in mind that unlike today, you could put any old wreck on the road - today it is not possible to use many surplus mvs for revenue haulage.
However after the war there was the problem of not being able to get hold of operator's licences for additional lorries, let alone get hold of new vehicles, so even total heaps of cr*p which had a licence would be quite valuable - just transfer licence to nice ex ww2 truck!! Example £150 for GMC chassis cab with zero miles and just a cracked block to stitch up....
So all in all, just as difficult as it is today, just a different set of problems