Yes, both PEX and Bill.com offer a Free Trial.
PEX is designed for Large Enterprises, Medium Business and Small Business.
Bill.com is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Bill.com begins at $0/user/month, while pricing details for PEX are unavailable.
Some top alternatives to PEX includes Rippling Spend and Bill.com.
Some top alternatives to Bill.com includes AvidXchange, APXPRESS, Paypool, Melio, QuickFile, InvoiceWorks, Tipalti, Stampli and Enverus OpenInvoice.