The Country Clean website is a bit lacking on info as to charges but what I gather is (and I stand to be corrected) that you pay a base fee that includes a weight allowance. When you go over-weight you pay/kg. My yearly bill started in the 200's, went through the 300's and my current 2024 bill is 400 euro and a few cents. I think the compost and bottle bins were free at one stage but I'm sure that all lifts are now weighed and count towards your year's total (I could be wrong, the info is scanty).
I have a large garden so during growing season my compost bin is full every 2 weeks, and really heavy. My neighbour has a small garden and uses those pop-up garden bags (6.99 from Aldi at the moment). When he has 4 filled he fits them in his Yeti and goes to the dump. I think he pays 5 euro for a car full of green waste.