So, you put down 30+# of seed for $99? Most aeration and over seeding starts at $35/k and goes up from there. A lot of guys are at $40+ all the way up to $65/k.
All depending but.....
Seeding: 10k at 5lb per (over seeding) would be roughly $80 in our cost for material. Time wise about 40 min walking. We do them at $199.
Fert: Roughly $40 in materials. $99 for us to do.
These prices assume we are also aerating. 1 guy is aerating while guy #2 is doing the other work. Time on site: 1 hour.
Before labor and OH, $180 on seed and fert + $100 on aerate. It's a package deal. $280 in an hour less labor and OH.
Aeration on a typical 10k here without the package is roughly $150. Assuming it's pretty standard.