I know of guys who was there on £1200 a month, got their 500 hours and left Monarch!
I doubt that would have been possible if Easy had paid their TR, but you should be in better position than me to know this. But it does not fit with the rest of the business model, of giving people summer contracts only!
I am unsure of how it works for the current starters but the TR on flexi crew at the moment is part paid by you and part by EasyJet, you are then bonded for 3 years. If you leave before then you'll end up with a bill for the outstanding part of the bond - basically you pay what is left on the balance of your TR. As everyone who has left to Monarch so far has had to do.