The JS-9MM pistol with a 4.5 inch barrel, low profile sights, and an 8 round magazine is worth about $90. If it has a compensated barrel and shortened slide, with adjustable sights, and a 10 round magazine, then it is worth $110. The most current model retails for $159.99 new.
Hi-Point bought out Stallard Arms and is honoring the lifetime warranty, no questions asked. To get service or parts for this particular pistol, contact: Beemiller Incorporated, 1015 Springmill Road, Mansfield, OH 44906. T: 866-948-4867.