Carrie - the price of $10.00/ft is for basic counters I have seen at The Home Depot - nothing fancy - just counters - that also doesn't include any installation etc.
As for paint. Even paint that will work reasonable well - a two component waterbourne epoxy and primer - will set the average home owner back about $70/gallon - Most companies have these in gallon size 1:1 mix - so you are looking at $280 + materials - maybe $325 or so.
Then you have to mix and apply - don't do this right and the products don't work. You will need one coat of primer and minumum two coats of finish - this will take about three days.
After all that - the product doesn't get good and hard for about a week - so you have to be gentle with it until then - and even after that - it will never be as hard as countertop material. You will need to be gentle with it as long as you have it.
No harsh cleaners - abrasives - no cutting on it or hot pans.
I am sorry - but this painting countertops has turned into a real nightmare for me - I have been severely criticized for sharing my dislike of this practice - I know it doesn't work - but people don't seem to want to hear about it.
I am not replying to any more posts about painting countertops in the future.
Best of luck to you - whatever you decide to do with your own counters.