Hi Kelley,
Thank you for your interest in Syncfusion products.
Essential XlSIO support currency celltype. Please refer the below sample:
http://www.syncfusion.com/Support/user/uploads/Globalization_8ff94d88.zipIn this sample the currency symbol is extracted from the culture info object and then used to construct the NumberFormat string.
Please let me know if you have any questions.
Regards,
G.Yavana