Foot in mouth
In my experience low or free shipping really motivates bidders.
In an auction once somebody bids it lets other bidders know 'hey this is something good I better pay attention"
Just knowing somebody else wants something triggers the buying instinct.
Lowes sells a heavy duty badass shipping box for $3 and use the shipping calculator at usps.com to find shipping from your zip code to California Florida and New York and base your shipping price on the highest of the three, make sure to add insurance on expensive stuff like cool saws.
Good luck with the sale
Dave