It depends on what the seller is "comparing" your snipe to. If it is seen in terms of your snipe vs. the absence of your snipe, then he will likely be please, because he sees your snipe merely as a last-minute boosting of the sales pice and, hence, his profit. Wihtout your snipe, the final price would have bene lower.
However, if he sees your snipe as a bid that would have been placed earlier in the auction, then he imagines that proxy bidders and nibblers might have upped the price beyond your bid. He will be annoyed that your bid did not come earlier.
It's a matter or perspective.
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