Its a shitty offer.
Your corporate identity is the biggest part of your company.
You dont have one, you dont have a corp.
Corp. Logos run $500 - Thousands.
If you just want a regular site logo, thats diff. Something that
wont be branded as a trademark. But the people that do logos
for say, McDonalds, or Airlines. Dont do em for $100. Plus they
get royalties for everytime the logo is needed on a new product.
You may find some outsource designer to do it for you though.