It's available to me, in Canada, with my amazon.ca Prime account.
https://www.primevideo.com/detail/0H7IG219C1SMXMM10KCWWB5SRA/ref=atv_hm_hom_c_w1n001_2_1?_encoding=UTF8&pf_rd_i=&pf_rd_m=&pf_rd_p=&pf_rd_r=&pf_rd_s=&pf_rd_t=