Franchii (Seeds of Italy) put some packets on sale for $2 each.

http://www.growitalian.com/on-...

The sale was recently extended, but I don't know when it will end.

Also look at their section "larger pkts for market growers". Sometimes a 100 gram packet costs less than 3, 30-gram sale packets at $2 each.

Buy a large packet and then trade 2/3rds of it!