Enchants cannot be put on vellums and sold on auction house in vanilla.
I have no way of knowing what price enchants sell for, so I cannot calculate a profit.
You can use this page to calculate costs.
Press on "Show Reagent Prices" to see the prices of each reagent.
You can edit the price of reagents here if you can source them cheaper, or if you think the price does not reflect reality.
The changes you make will be stored in your browser, and remembered. You can click on "Reset all prices" if you‘d like to reset them.