Where can I buy a copy of lord of the hammer so I can find out the ending

>>534294814
Oh sorry lemme schizofy it
>the dialogue options are written by GASTER and FRIEND respectively. Gaster makes the options on the right side and friend makes the ones on the left.
>they wanna see who has ownership of the soul so they do the ol “put the dog in the middle and see who he runs to” method”