I asked the same question just over a year ago on this forum and was completely put off of following up the idea so virtually had to stop flying for a while until I had enough to pay the enormous sfh rates in uk.
Would consider again in the future based on the (slightly) more positive posts this time around.
Would now have to be after my dream posting to USA for two years where the 22 sfh rate is basically dollars for pounds so will be getting back into the sky that side of the pond!!