No, Nana Screw and Nana Machine Parts are both nearby and have an excellent selection of quality tools but they don't discount prices unless there is a special promotion going on.
The place I go to will come down in price - after some bargaining - to within a few hundred baht of Lazada and other online prices, even on big ticket items.
That, combined with good repair and warranty service has made me a regular customer
Lertwattana, located outside the moat at 24 Maneenoparat Rd., with a big red and white Makita sign on the roof.