Hi guys - there is no ultra cheap option to do a revalidation on the A320. I am an A320 TRE and do revalidations regularly. The typical cost for a TRE is typically £400-500 for a sim session. As a minimum it will take 3 hours on an A320 simulator, assuming no significant issues along the way. If there are two of you it will take the full 4 hours (the second guy does not require to do the start-up, taxi out and departure). The cheapest A320 sim in the UK that I know of is £288/hour including VAT at Quadrant Systems Ltd in Burgess Hill near Gatwick. If you wait beyond the year, then you are into using a TRTO like CAE or similar - they are big money. So, the cheapest way is to get another rated guy in a similar position and then go together to a tame TRE and he will do it if you are inside the year. That way the cost per head is around £800-ish. That assumes that both candidates are competent and do not require substantial retraining and/or retesting. Hope that helps.