need hp fuel pump for 250 efi

Hi I need a hp fuel pump for my 1998 250 efi..what should it cost. and can I get a used one.. I let my set about 3yrs. and how it is seized. or can I free it up..
thanks ray..

[boats.net]

Don't have any used ones but a new is number 20 in diagram,
Yamaha Outboard Parts 1998 S250TXRW FUEL INJECTION PUMP Diagram