Pretty sure it's 60p or 70p for adult items, 30p for kids and pillowcases. £2 for duvet cover. I send out hangers so as not to get it back on the wired ones, not covered in plastic except duvet cover etc which is and is folded back in the basket. There's two of us and seems to be about £10 a week.
I pay £10 for 30 items which is quite cheap imo, I supply the hangers - if it's adult clothing that works out at almost a full bin bag, DC clothing make up about half a bin bag. I drop off/pick up the items up. It can be tricky getting all the hung items in the car without crushing them though...
£5.00 per kilo. Picked up from my house, delivered next evening on hangers/folded depending on the item. I like the £ per kilo method as you get lots of the fiddlier stuff like shirts & blouses to the kilo, don't usually bother sending stuff like sweatshirts which weigh more.
I haven't ironed for 20 years other than the odd emergency item. DP has never ever ironed anything!
I pay 15 for 30 items, picked up and dropped off at my home. Hangers included and covered in plastic sheeting. I only get it done once a month really, I do it the rest of the time myself although I'm growing to hate it even more.