I have been offering $2.00 shipping for years on lower end cards and free for higher end and have not been dinged at all. Sorry to hear the issues with your buyers. Can you link us your profile so we can take a look?
Currently Buying Flawless Patch Autos /15 and less of Jerome Bettis, & Rod Woodson
If You Are Treating Cardboard As An Investment And Not A Hobby Then You Probably Need Some Money Advice. Play the Slots.