Im rather interested in your cheapest buys for BFG than the most expensive ones talked about in an earlier topic.
I think one of the best deals for me was the main part of my first fleet, GW Tau. If i remember correctly it was:
1 Explorer
2 Merchants
1 Hero
2 Orbitals
~7 Orcas
for about 50€
The second nice deal was a complete new BFG game box for 40€
There were some more smaller purches that were really cheap but i cant remember all exactly.