Based on the figures Finals19 has worked out I don't think this is financially a good move for a flybe dash or jet FO, given that you have to pay for the type rating. Consider that in order to have the hours to apply for this you will probably be a Year 3 FO - if on the jet you will be earning the same as that Easy wage. Most folks on the jet are well beyond paypoint 3. If on the dash it wouldn't be too dissimilar once you factor in TR repayments.
£350 for the privilege of an interview?! They've got exploiting newbies pretty sewn up, now it's the turn of those with a little bit of experience.