jojo,
ouch thats pretty steep. in my clinic we do all that for £23!!!. also going on those prices your cast orthotics will probably be very very expensive (they'll cost him/her ~£60-90 max to send off for and retail around £100-200 depending on how much he wants to charge and IME very often unnecessary.
We try to get our patients to use cheaper products first and if they cure then either ween off until all is good (in the case of an overuse injury) or then manufacture a more permanent/custom made orthotic if needed
Google orthaheel pain reliever or vasyli products and you can try these things for around £25 and IME work more often than not, they wont look as spoofy as they're not flashy carbon but they work and are comfy, worth trying if your're on a budget or just have an overuse injury.
oh and do as goan says with coke can or golf ball or baked bean can staight from fridge, did pod person recommend any stretches also?