In the words of Nelly, Its getting hot in here! In the low-cost laptop market that is. We can now welcome HP, the number-one PC manufacturer, to the sub-$500 notebook club. Today the company released its long-rumored low-cost laptopthe Mini-Note. The HP 2133 Mini-Note is a full-function mini-notebook, starting at less than $500, and according to HP is designed for the education market.