Ash -my quotes are always based on Use - not work for hire
But bands of use for example rather than specifics
Banded use..
web only X years
or
web brochure and local press advertising, X years
Specific use..
Image XXX at 400PX banner on homepage, image YYY as 100X300 upright on about us page
Or brochure 2010 cover, a4 size
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I initially learned about licensing over a decade ago when I was working and my 'for the local press' images started appearing in brochures reports - because my photo shoots were exceeding the clients expectations - I felt exploited and nailed down my T+C
Those changes of use occured about the time my digital images actually became sharp enough for using in a glossy environment - shooting D1 offers a lot of protection !
The bottom line I think is to charge as much as you can in whatever method possible and quality work will push what you can charge up
So upping the game will up the fee - simple