The robbery happened on January 14 at the store on the 3200 block of Byberry Road.
Police say the suspect walked into the store at 11:45 p.m. and approached an employee at the counter.
He had his hand inside his coat pocket simulating a weapon and stated: "Give me the money".
VIDEO: Click here to watch the surveillance video
After the clerk placed an undetermined amount of cash on the counter, the suspect took the money and escaped west on Byberry Road.
No injuries were reported during the incident.
Police describe the suspect as a white male 6'2" tall and 180lbs. He was wearing a black knit hat with yellow writing on the front, dark sunglasses with a tag hanging from them, gray hooded sweatshirt, dark colored scar around his face, flannel style shirt, black jacket, black gloves and blue jeans.
Anyone with information on this robbery should contact police at 215.686.TIPS (8477) or text a tip to PPD TIP (773847).