Remember that some of those 60,000 people are one-day attendees. I'm not sure just how many, but I have noticed quite a few, mostly on Saturday and Sunday. So the 4-day badges might have to pay a bit more, and the 1-day a bit less, to hit the $300K.
And I suspect that might not be enough. It might cover the cost to run the buses but I doubt it would cover the driver's pay nor profit for the owners.
Let's throw some numbers around; if these are out to lunch for some reason please correct me.Say we put 6 buses on the road and run 'em 24 hours a day from 6 a.m. Thursday to 4 p.m. Sunday - that's (24+24+24+10 =) 82 hours of operation x 6 buses = 492 operating hours. A $300K budget thus gives you $609 per operating hour. Let's say the drivers make $40/hour average, factoring in overtime etc. - that still leaves well over $560 per hour. Someone who knows bus operation better than me can chime in here and tell us what it costs to gas up a bus and keep it on the road, but I'd be pretty shocked if it was more than $500/hour, leaving the remaining $60/hour or so as profit for the bus company.
And possibly all 6 buses don't need to run overnight, maybe we just need three from midnight to 7 a.m.; the operating hours thus saved could go to a limited service Wednesday afternoon/evening and Sunday after 4.
In short, I suspect it would be more than enough.
So here's some basic info:
You can charter a bus for 12 hours for around $1300. Cheaper if you use school buses (~1000/12) instead of motor coaches (and, frankly, you want to use school buses because they can pack more asses into them, and you're NOT going to want to be using the under-coach storage anyway, it's just not time-effective... the challenge may be getting them on Thursday and Friday if school is back in session already).
(Source: http://www.busbank.com/charter-bus-pricing/school-bus-rentals/ )
So every bus-day is $2000, ballpark numbers.
Let's say there are six different routes. Let's say a route takes an hour to do, out and back. Let's say we want buses to run every 10 minutes.
6 routes * 6 buses per hour * 4 days * $2000/day = $288,000
These figures don't include gratuities. 10% seems to be norm, but for this kind of "abuse" of the drivers (in terms of long hours, etc.) figure 20%, so ~$58k just in gratuities.
Now, folks will say "you don't need buses every 10 minutes at 4am" and you're right, but you're going to want them every 5 minutes during the day, so it all balances out, in terms of "back of the envelope" type cost-analysis.