If you have a living room chair in stock that is on the floor can it be purchased & taken with you?

If it is in stock in the warehouse you may purchase it. But if you are asking if you can physically take the floor model, then that answer is no. How it works is you write down the product number and then when you get to the downstairs check outs, at that time you can ask an associate and they will direct you on its location and at that time you will be able to physically take it with you.

Floor models are generally available for sale.

Yes, if the item is available in the warehouse, you can purchase it