How many here have tips on buying from Ebay?

I'm sure there are good and bad experiences here.

Now...on a $2700 keyboard, would you buy it new? or buy it used (sight unseen) from ebay for about $250 less? (Korg triton studio, less than a year..it's actually selling for about $2200, BUT I'm thinking of purchasing a "buyer's warranty" from ebay for $250, making it $250, making the final price $2450).

I think I already have my answer after typing this....hmm..but still wanna know everybody's opinion.

KN_Fan.