i'm glad you sent it back, especially since the vender indicated that there wouldn't be a problem doing so. i'm giving you a link that you might find helpful in the future, but be sure of what you buy and don't be afraid to pester the seller if you have any questions.
http://www.sewingmachine-sales.co.uk/partsDB/index.php
search 'feet' in the window.
same place, a different link setup:
http://www.sewingmachine-sales.co.uk...uilt-foot.html
on the second one, you can be very specific about your machine and actually see the foot in motion. you can click on 'more info' for pricing. i've goten feet here with great success. however they do not have everything.