Trading Turnips and stuff

[Frodo]

I'm looking for good turnip prices. since I don't have tons of it, it won't take too much time. Just one trip to Re-tail.
I can give you a silver slingshot, a bamboo shot or a fossil you need.
Here's the list:

plesio torso
T. Rex Torso
megacero skull
megacero torso
megacero tail
sabertooth skull
ankylo skull
spino tail
styraco skull
archelon torso
plesio torso
iguanodon torso

Thanks :3