I have a professional exam am preparing for but mehn the formulars too much for me to get familiar with in less than a week time. So I decided to get a standard "TEXAS INSTRUMENT TI-84 calculator" from ebay so I can easily store all the formulars in the 100mb standard calculator. I saw the particular one I want but I contacted my shipping agent and it seems it will take upto 9days before I can get it here in Abuja, so I shifted to Aliexpress to search for something similar or a better model since I can use "Happy Time Express cargo" and get it in Nigeria within 24hours. I saw one that interest me but another problem arise, my mastercard wasn't accepted for unknown reason,Damn. So I called one of my chinese friend to help me make the purchase and send to me the usual way she always does, I send her the money + sf express delivery cost via paypal.all successful. I was surprised today getting a customised sms from JUMIA Nigeria telling me there is 25% off casio calculator but I never search any Local website for the calculator.
My Question is how JUMIA knows am in search of a calculator



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