For S$3,000 per month you can expect to live quite comfortably - rent is nowhere near as expensive as in Edinburgh especially if you rent a HDB flat. If the three of you are paying around GBP 1,000 p/m that works out to about GBP 330 each, or around GBP 90 per week - just enough to rent a small room in Edinburgh. You can rent a 4-room HDB flat (3 bedrooms with living room and kitchen) for well under $2,000 p/m, or a condominium
unit for $2,000-$2,500 p/m. I am renting my 3 bedroom condo
for $2,500, the bedrooms are pretty small but it's comfortable and comes with gym, swimming pool and so on. You'd never get that in the UK.