Firstly it would depend on how much you are prepared to spend both in time and money. If you are not going to spend much time practicing then there’s probably not much point in getting a putting mat. If you’re only prepared to buy the absolute cheapest then again it’s probably not worth it since the performance is unlikely to be great. However, if you are prepared to put the effort in and get a reasonably decent mat (around $100) then it should be. A few minutes of practice every day should see you improving your scores.