Where can I go for used cell phones in St Catharines?

My wife and I grabbed a used mobile phone a month ago for our granddaughter. She has been begging us for a new Samsung Galaxy Note and we thought it would make an awesome Birthday gift. We went to Mobile Tech Xpress on Merritt in St. Catharines to inquire about one. MTX had a few different Samsung phones for sale and only had one Samsung Galaxy Note 2 available. We were sold! Samsung and were given 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 are extremely excited to see her reaction when she receives her present. Thank you MTX staff