Hi TheBSG. The top one on your list is charging £150 according to her profile. Also I would say that lots of WGs say FK, OWO, CIM, and swallow are at their Discretion, but apart from the odd one or two fussy ones, I personally have not been refused FK. Most of the time it boils down to how clean the punter is, and for FK it obviously more often than not depends on the punters oral hygiene.
I personally don't have any knowledge of any of the WGs on you list. But I wish you luck with whichever one you decide to go for.
Cheap but looks too good to be true?