Most customers will use Pocketbet or Matchbook as their main exchange due to the 0% commission deal that Outplayed customers receive with them. However, there may be times you want to use Betfair Exchange and their minimum lay stake is £2.
It is possible to trick the exchange into allowing bets of less than £2 although Betfair are not overly keen on this technique so do not do this on a regular basis. A full guide on how to do this can be found here:
https://www.outplayed.com/offers/training/how-to-bet-less-than-2-on-the-betfair-exchange/