https://paytm.com/shop/g/stationery/buy-1-get-free-offers

Suggestion
P-266 Dikawen 898 Black with Silver Cap Roller Pen + Fountain Pen (Buy 1 get one free) Rs 349 + Sh 29
https://paytm.com/shop/p/dikawen-898-black-with-silver-cap-roller-pen-with-fountain-pen-STADIKAWEN-898-PRIN415682F78BFB
P-126 Lampo Blue & Green Fabric Finish Mini Ball Pens with Silver Cap & Trim(Buy One get one free) Rs 149 + Sh 39
https://paytm.com/shop/p/perfect-lampo-blue-and-green-fabric-finish-mini-ball-pens-with-silver-cap-and-trim-set-of-2-STAPERFECT-LAMPPRIN415687A97F1BC