1. Ebay runs a second-price auction. This means if you bid $2000 and the second highest bidder is only $1000, you pay $1005. Best is to bid your highest willingness to pay early on, and see if you get an email in a few days saying you won. No need to monitor and keep rebidding.
2. The technorama does have a shift attachment for certain models. I think its 8mm, and can be flipped in both directions.