Vintage T-Shirt Forum & Community Authentication Appraisals

Hello!
I have now around 80-90 DS tees made for Motocross circuit in Europe. They all slept for a long time in a garage so they are deadstock. 100% cotton not any mesh jersey type as Comps on eBay shows.
I wonder how much they can be worth at best?
I will resell it by the time being, I was thinking for about 80€ (100usd) could be a good price to sell, but they might be worth more cause it's quite collector.
The prints includes all moto brands; KTM, Suzuki, Kawasaki, Husqvarna, TGM, Gilera, Muller, SWM, Villa, Hercules, Fantic, Maico, Beta, Gancia, Puech.
There is ringer tees and longsleeve tees mostly, only 10s not ringer or longsleeve

Thanks for any review!

Not a niche I know a ton about but do know some can be $$$ are they all kids sized though?

There's a few kid sized yea, but I picked L-XL and some M, let's say 75% is Vintage L-XL so modern M-L-XL 15% modern S and 5-6 kid sized. I also have beanies but that's not the topic here

Nice. Yeah do some research with terapeak so you don't end up giving any away for too cheap!