Have a serious think about this. I'm sure that you can raise the funds - you've demonstrated that by doing the CPL/IR in the first place !!!
Remember that if you do not renew the IR, chances are that a job or job application form will come up where you are asked "ARE you current". And there will be more than 5 or 6 other bods who did make the effort to be current and will get ahead of you who is not ?
Why reduce your slim chances of getting a flying job by not making a bit of effort once a year ? Its a cut throat world out there. Granted, that most operators don't always require you to be Mep current, but doesn't it say something about the candidate that feels that he/she does not need to make a bit of effort with their career ?
Good Luck - there are plenty of places to renew ratings and they don't have to be done at scabair or twoxford prices.