The Best Place to Buy Used cellphones in St. Catharines?

I bought a used iPhone 4s at Mobile Tech Xpress near Niagara Falls. The cellphone worked perfectly and was in amazing condition. I was extrmely satisfied with the quality of the device and the price. I also purchased a case and screen protector in store . MTX had lots of otter boxes. The staff educated me on how to take care of my new phone in regards to proper charging methods and how to locate iTunes . There was a large amount of phones available in the store and they helped me in choosing the right phone .