How much Tax for K8 machine if I buy from Florida?

If you're purchasing at the Orlando office use the current tax rate 6.5% If the order is being delivered to a customer, use the tax rate of the order's destination

I am using leveluk501 in uk..can i use it in florida whn i come there..any difference in power or volt with us electric plugs??

Depends on the city in Florida. Orlando is 6.5%

I live in the county of Palm Beach which is 7% tax, your total would be $348.60

Not sure. 6 percent