I had a 50mm/18ga tacwise mains nailer, similar but different to the one on the link – I had terrible trouble with it – frequent jams and misfires, hated it. For a corded tool it had a really short cord too. I was using it with MDF and chipboard onto timber battens. Dreadful.
If you’ve got dewalt nicad / nihm batteries (or the early Li ions that were the same shape) then see if you can find a deal on a bare cordless dewalt 16 guage nailer. They work really well. Just as capable of driving in the nail as an air nailer but less wild, abrupt and percussive than the air one, you can work more neatly. I doubt you’ll get one for as little as £100, but theres ones about under £200 on ebay.