To be honest I think the whole business concept will attract more value than just the domain alone. Nokta for example, which is by far the most generous automated valuation algorithm front end valued dryvers.com at $426.
Estibot was a little more generous at $550.
99% of Appraisers here will quote the dreaded 'reg fee', which as a stand alone name is all dryvers.com is worth.
The established website with at least 50 regular paying clients would yield at least $5,000, well that's what I would feel comfortable paying anyway.
Regards.matt
P.S
Macaulay Culkin is trying to earn some crack and or heroin money with his 'Home Alone' reprisal. I would ask him, seriously, because he is using 'Dryvers' as the working title for his current project.