Finding hCG (Gonasi) in the UK

I have been prescribed hCG but it is extremely expensive in the UK it seems (I used fertility2U as recommended by my doctor). It is about £50 for a 5000iu vial which is way out of my budget unfortunately. It seems a year ago it was much cheaper and more widely available?

Does anyone know any alternative cheaper methods to obtain this in the UK? I would really appreciate any help!

Cheers in advance.