I've come to a deal with 420 as follows:
Seller to ship the following:
Seller claims items in good working condition and rig should be able to mine BTC without any problems.
Buyer offers 90BTC
Seller is responsible for all shipping costs.
Deal to be escrowed via Graet (ozcoin pool operator) as escrow agent.
Rig will be tested by buyer when received to ensure that rig is able to mine at standard engine clock rates.
Escrow agent to release funds to
buyer seller "420" upon buyer satisfied with condition of rig, not to exceed 10 hours after receipt by buyer.
I'll transfer funds to escrow as soon as 420 and Graet witnesses and Graet sends me an escrow addy.
Thanks.