You wont gain anything much. DP charges for order placement of buyback is 25/- in Zerodha. Not sure about other brokers. Plus there will be other charges for order execution. As per Zerodha charges calculator, it is 16.36/- So 41.36/- already gone. So profit you will earn 290- 238 - 41 = 11/-,, so only 3.79%, so less for the efforts you will be putting
Will one share strategy work in this buyback?