thank you for your help but due to time i can only obtain products from prochem.need to start by 10 am tomorrow
You're leaving this a bit late.
5L container covers about 30sqm and costs about £30 The figures aren't exact but close enough without getting the file out, so from that you calculate how much you need and how much it will cost you. How much profit you make is up to you.
Don't forget you should first pre-spray a new carpet with an acid rinse so the protector adheres properly. So now you need to add that into the equation too.
And time, you need to add that into it too.