Does a seller of Real Estate need a lawyer if you are selling "as is" or does just the buyer need one?

I'd always suggest that the seller have an attorney review the sales agreement and the settlement statement if nothing else.  Customarily the seller is responsible to prepare and pay for the deed.  Having your own attorney allows you to control the price for that.  If everything works perfectly, you do not necessarily need an attorney but things so rarely work out that way.