Where can I go to buy used cell phones in St Catharines?

My wife and I grabbed a used cellphone a month ago for our granddaughter. She has been begging us for a new Samsung Galaxy Note and we thought it would make a great Birthday gift. We decided to go into MTX on Merritt in St. Catharines to look for one . Mobile Tech Xpress had a variety of Samsung phones for sale and only had one Samsung Galaxy Note 2 available. We purchased the phone and received a 90 day warranty. The staff also helped us in choosing a case and screen protctor. We were very pleased with the service we received and we can't wait to see her reaction when she receives her present. Thank you MTX