Backorder with 18$ or renew it with 70 $(Pending)

[webmasterbeta]

i forgot to renew one of my domains and now its in pending time so i asked them to renew it they said it will cost about 70$ my friend told me to backorder it from godaddy with only 18 but he is not sure if i will get it or not, do i have to pay 70$ or ifi backordered it i will get it back ?