They are worth - and brace yourself now...sod all.
Thats right, someone might think a hipster might pay that much for some retro wheels but they were not that good a wheel in the first place, despite being plastic they used to buckle and no they would not go back to the right shape if you put them in the freezer.
The real money is in complete 80's BMX bikes with all the original kit on them.
Some goon on the bay might think they are worth £180, they aren't, even as a collectors item.