There was someone offering super cheap (I think $5000-7000) Garmin 430s
on barnstormers.com a few months ago. The description made it sound
borderline plausible (eg, they described that the reason they were so
cheap was that they were sold internationally, and did not have US
plates, etc etc) but subsequent fraud warnings that popped up on the
website made it sound as if there was a problem.

Avionics have gotta be an attractive target since there's such a price
premium attached.

Ben Hallert
PP-ASEL