Hi Katherine, I think you are on the right track with spices and rubs ect, for prices I would look at your local tourist shops and see what they charge and or web sites, and I think you would have to check your council to see what permits you may need, good luck with your venture. You might be interested in this web address www.angryalmod.com to source you ingredients 

Hi all just made the curry powder, wow !! I can recommend this one 

________________________________________Cooking class
Location   Kalgoorlie Baptist Church
Cnr Lionel and Wilson Streets
Kalgoorlie, Australia
23/10/2010 @1730
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Created by:   Thermomix Goldfields and Kalgoorlie

________________________________________
More info   Melinda Hutchison, Group leader for Thermomix Australia will be travelling to Kalgoorlie, teaming up with your local consultants and presenting an evening cooking class and tasting.

This event is designed to show of the Thermomix and to share tips and tricks during a fun night of like minded people.

The night is great for the following people.

TM31 owners (bring a friend !)
People who would like a peek at the TM31 in action without their own demo.
People who have never seen or heard of the Thermomix and would like to see it in action.

Cost is $15 per head, please book and pay with your consultant. Monies goes toward food and venue hire.

Hope to see you there

I might try it again without the cornflour

this is really nice 'it's our new favorite' thankyou 

thank you , I signed up on forum months ago but didn't know how it worked but thanks to my daughter Michelle (also a TM owner) I am on board now