I have recently swapped my cactus for some perennials and was very pleased, as I was only on this website for a couple of days and the person I swapped with had only been on here for a week. So it does work.
I have met some lovely people in the process too. Thank you to those people who I have been in contact with. I have found other people who I will be buying from in the near future, in my area within reasonable distance.
Big thank you to GreenPlantSwap for creating this website.