I emailed them and they replied (i have edited it)
Yes we are still going to run courses on the DA42 but unfortunately we have been forced to increase the IR price by £680.00, you do of course have the option of completing the course in the Seneca.
It has been decided that all new starts on IR will have the choice to either use DA42 which will have a rate increase of £40.00 per hour to offset some of this unfair and unexpected operating cost which has been forced upon us. The new rate will be £350.00 per hour. The other option is to use the PA34, the rate is £346 per hour which includes 30p per min fuel surcharge, The PA34 rate is unchanged only the fuel surcharge has increased, this is to reflect huge Avgas price rise this year. Sim prices remain unchanged.
I apologise but we have no option but to take this course of action in the present situation.
Kind Regards
Lisa