I actually looked into this a while ago, I have absolutely no moral qualms about taking (performance enhancing) drugs to increase my enjoyment of sports, especially as I get older testosterone replacement therapy seems quite attractive, even just to slow the decline into old age.
It isn’t that hard to get hold of stuff online, there are forums (mainly for bodybuilding) where if you do your research you can find the genuine suppliers. Obviously most PED’s are muscle builders so not fully suitable for cycling. However it should be noted that what most PEDS do is allow you to train hard then recover faster, allowing you to improve through hard work, they are not a shortcut, so for cycling they would allow you to cycle more frequently and harder, but it will not be “easier”.
EPO was quite expensive, prohibitively so.
TRT is the one that made most sense IMO, but I think for me I would want to be supervised by a doctor, it is actually pretty safe as long as you know what you are getting is legit, and don’t overdo the dosages.
And that is where it falls down, if I could buy it from a private consultation with a doctor, get a blood test every other month, it would be safer than drinking a few glasses of wine a week and benefit me much more. But that option isn’t available to me and I am not going to trust the black market so I am out.