From a designer working 5 days a week at 8 hours a day?

Specifically, when it came to certain types of design work for example..

X amount of affiliate designs
X amount of paysites
X amount of banners
X amount of FHGs
X amount of FPAs

If you were paying $2500 a month for a designer what would you actually expect to get out of that investment in the space of 30 days?

Early next year we may be in a position to hire a full time designer and he is looking for roughly $2500 a month to work 5 days a week @ 8 hours a day and we're actually really liking the work he has done for us so far.

Regards,

Lee