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

My wife and I bought a used mobile phone a month ago for our niece . She has been asking us for a new Samsung Galaxy Note and we thought it would make an awesome Christmas gift . We went into Mobile Tech Xpress on Merritt in St. Catharines to look for one . MTX had a few different Samsung phones for sale and only had one Samsung Galaxy Note available. We grabbed the cellphone and were given a 90 day warranty. The staff also helped us in choosing a otter box and screen protctor. We were very happy with the service we received and we are extremely excited to see her reaction when she receives her gift Thank you MTX staff