New to doing adc work. A guy wants to hire me for racoon in sweetcorn. What would everyone normally charge per removal?

Time & millage. Depends on how far I have to drive and how many trips I have to make. I realize that does not help much. Also how much time it takes to depose of the coons after you catch them. All has to be figured in.

Agree with Jim also do you plan on fur trapping this place? Might be an additional plus as it’s always nice to be able to have another place to shoot fish hunt heck just walk around

There's usually a big disconnect between what a farmer thinks a raccoon should be trapped for and what a nwco needs to charge to stay in business.

Depends on circumstances.
What's the access, time of year, your travel time, need to trap every last one of them or reduce numbers, any other perks come with it?
Different too, is there one coon (probably not), or are there 25?
Do you want to trap there come fall or build a relationship to get hunting access?
If I tell you $50 per coon, city folks won't blink an eye, the farmer might laugh at you.
Farmers are often funny that way, they want them gone but don't much care to pay for it.
How much sweet corn can a coon eat in one night? what's that worth?

Never met a farmer without his own traps. How much has he educated this raccoon? Before you price it, you might want to figure out what isn't going to work.

Farmers around here want them gone and few are willing to pay. But some understand and make it worth while, maybe not in cold cash but in barter. I've gotten fresh hamburger, gas coupons (tax write off for the farmer), gift certificates and other stuff along with hunting and trapping privileges. One gave me a bunch of traps and said with me around he didn't need them anymore. Made some good friends and gotten some cool stuff but it doesn't always pay the bills.