Since you asked directly "what should we do", here's what I think (coming from a complete outsider who had never heard of Susan G. Komen before now and still just has a vague idea of what it's all about):
- set up a anonymous poll letting people vote on whether they would buy a garment supporting the foundation or not. There may be lots of people who do support them but don't particularly feel like piping up. Your own personal opinion should play a part too, of course.
- if the majority do say "no", get in touch with the vendor, let them know that you would like to buy from them but your customers have made it clear that they do not want to support the foundation, and that that is the reason you are cancelling. If you feel like pursuing it, contact the foundation too.
The vendor may choose to stop supporting that particular foundation. The foundation may get so much bad feedback that they reconsider. I dunno, but if you do choose an active boycott, it's a lot more effective if you clearly state why.
Good luck whatever you do. And thank you for asking for our opinions!
Winter riding is much less about badassery and much more about bundle-uppery. - malkin
1995 Kona Cinder Cone commuterFrankenbike/Selle Italia SLR Lady Gel Flow
2008 white Nakamura Summit Custom mtb/Terry Falcon X
2000 Schwinn Fastback Comp road bike/Specialized Jett