Is Ebay holding my money?

[tamsfunkylittlefinds]

On my account, under "not received" is listed $102.85.  What are those funds?  I only have 2 buyers who haven't yet paid and those total about $20.  What the heck is $102.85 not received?  Thanks! 

Totals

Current Listed 41 Will sell 2 Bids 2 Amount $19.98     Sold (last 31 days) Listed 38 Sold 41 Amount $516.71     Payments (last 31 days) Received $413.86 Not received $102.85   Total sales: $536.69