I believe the seizure of goods is purely punitive. It's a punishment. The value of the goods seized and sold at auction would be so little, because who really wants second hand stuff. Its just to deprive you of your home. Plus the extra charges they put on, swamps the value of what is seized, so you cannot cover the total. I don't know if they come back for more to make up the shortfall or whether they think you've been punished enough. though I think that's unlikely.