It'd be a tie between my Laney half stack (with 2 1/2 out of the 3 year warantee) off a dude who bought it brand new earlier this year, 600 AUD
OR
custom built quad core gaming computer with a free upgrade from Intel Q8200 to Q8400 delivered to my door for 850 AUD
Well got my worst ebay win yesterday actually...
Won a guitar hero guitar for 20 euro's. Suddenly the guy charges me with 30 euro's shipping!...
While actual shipping costs can't be over 15 euro's. I twice had a guitaramp shipped to me from Germany to Holland costing me 12 euro......
Bought them both pretty far apart (and have since sold the head), but Line 6 HD147 for $480 shipped, and the Mesa Slant 2x12 (with V30s) for $120 w/ local pickup
(pic is from after I converted it to having rear-mounted speakers, took a little routing, but nothing too serious)
Oh, and I got my factory-refurb. Onyx 400F interface w/ a 3 year warranty for $525 shipped as well! (it was $800 new until they recently discontinued it)
Ibanez made in japan RGsomething guitar,owned by TERRANCE HOBBS of suffocation full with signatures of all of Suffocation+hard case+shipping from USA to Greece