Sophie Satterfield in Spartanburg is great. Don't know about prices, and I'm assuming she's still in the catering business (I grew up in Sptbg...my family is still there). Also, I believe Converse Deli in Spartanburg does catering. They've got awesome food!
Re: Greenville area caterer's...
https://bagatellecaterers.com/
They do a great job.