A reseler hosting is around approx. $50/YEAR
WHMCS or Clientexec is aslo around the same price.
Not from what I've seen. Reseller hosting from a reputable provider, with a billing software license included, tends to start about about $15/month. WHMCS if bought separately from the hosting, like directly from the developer or even from Licensepal still costs $13/month+.
In my opinion, with all that he wants done, his budget is OK. After all, it must cover costs for something like a year, because getting to that break-even point might not happen as soon as we like it to.