Of course that will be expensive with no insurance and that you might not need all those damn substances at once and the supra-medicinal dose of test cyp.
One hundred to 120 mg every five to seven days is the standard for T cyp for TRT.
Arimidex is not necessary if estradiol is at a desirable value during TRT. I have been on TRT for thirteen years and never used it.
HCG is not used by all people on TRT and many men do fine with just testosterone. I was one of them, but am now on HCG monotherapy.
375 mg per 12 days is not TRT and can lead to serious problems in the long run.
Again, you don't need arimidex if your estradiol is normal, which is likely will be if your T value is mid to high normal.
Do you have insurance? One 10-ml bottle of T cyp is 75 to 120 bucks depending where you buy it, and if you use it for 100 mg per week it will last a little less than 20 weeks! That's cheap, even without insurance.
Brand name HCG can get expensive if you must use large doses. One bottle from APP can cost 85 bucks if I recall correctly.