I've been following along and I'm just not getting something...
I finally got the '1054 Unknown column... already exists' errors to stop when i'm logging under my custormer account.

I'm not seeing the wholesale price option when I edit the product.
I've double checked everything with 'customers_wholesale' and re-uploaded everything to my 'zc_admin' and 'includes' folders.
What am I missing?

In the admin / customers I can see 'Request Wholesale'...
I've changed my account to 1 (wholesale) and I can't change it back to 0. Is this supposed to happen?

PLEASE Help! I've almost got it.