Last price I saw was $800 tonne for plastic bottles,but thats a lot of coke to drink
But not all plastic wastes are nice and cuddly,have you ever seen old silage wrap? mucky yucky and covered on old cow dung? Way to go there from my point of view is incineration.Incineration to cut out too many fussy and expensive recovery steps.[Expensive in time and energy] but this must be done with heat recovery so as to save the oil equivalent. Incineration can be clean if the rules are adhered to [ I wrote a paper on this many years ago,sorry ,its not on google
] . I see this road as much safer and cleaner than landfill which is a last resort.