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

My wife and I picked up a used phone a few days ago for our niece . She has been begging us for a new Samsung Galaxy Note and we thought it would make an awesome Christmas gift . We went into MTX on Merritt in St. Catharines to look for one . MTX had a few different Samsung phones for sale and happened to have one Samsung Galaxy Note 2 available. We purchased the cellphone and were given a 90 day warranty. The staff also assisted us in choosing a case and screen protctor. We were very happy with the service we received and we can't wait to see her reaction when she receives her gift Thank you Mobile Tech Xpress