Virtually everyone gets an allocation of free listings every month and there are periodic bonus allocations sent by email and usually posted in this forum.  You only pay for listings above our allocation and for extras you may choose to use.  So technically it is free to list a certain number of items, I rarely pay an insertion fee, it's not that hard if you juggle your free listings.

FVF on the other hand, that's a whole different kettle of fish, but you don't get anything for nothing in this world so what can you do?