Can I withdraw a bid?

[schnauzerlady3]

I placed a bid on a sewing pattern and I have discovered the shipping is too high.  Can I withdrawn my bid?

[reallynicestamps]

Yes.

http://offer.ebay.ca/ws/eBayISAPI.dll?RetractBidShow

Note that there are not very many reasons.

You can also ask the seller to cancel your bid. She can do that at her whim, but is not required to do so.