Found it:
Source PWInsider.com
The word going around the locker room is that Vickie Guerrero was only being paid $500 per appearance by WWE. On top of that, she had to cover her own hotel and road expenses.
Typically, talent on the main roster net a $75,000 downside guarantee at the very least, so her salary was drastically below even the lowest paid main roster performers in the company.
Some wrestlers are understandably fired up over this rumor, as the feeling is that the company could have done more to take care of a person who was such an integral part of WWE.
Although, it's worth noting that WWE paid for Eddie Guerrero's funeral and likely did more to help out Vickie financially than the locker room is aware of.