Think you are right in the ball park. $1000 would be lower end. $1500 would be upper end.
There a multiple ways to break it down but I always lean toward simplicity like $15 per bale.
I have some one wanting hay. I told them right off the bat they would be in the $75 per bale range. They popped back... even with this rain. I said rain has nothing to do with it. $30-35 to bale, $15 to fert, at least $10 to haul, doesn't leave me much profit. It's hardly work the hassle for $20 a bale.
In today's climate of equipment costs $15/ bale to haul would not shock me especially if you have to load and unload for them. If some one doesn't like it tell then to go but the truck and trailer and you will hire them for $5 per bale.