The horse paste (tube) is cheap! I saw it for about $2.40 at Valley Vet online. The injectable was about $64! Not sure where you're looking that's so expensive. Shipping was about $7. I got mine (tube horse paste) at a local feed store though. It was about $8, so cost less than online due to added shipping cost.
I've only taken one dose of the Ivermectin so far, but based on that experience alone I'd have to say it's a "miracle drug," in that so many of my horrible symptoms went away! At least for that day. (It's powerful stuff!)
I've got a bunch of things I have to do for a number of days so I can't continue taking it right now. (Along with the Albendazole.) Will definitely get back to it though! (Both the Iver & Albenz wipe me out & conk me out for hrs after taking them. I need to be alert for the things I have to do so I can't take them on those days.)